航海及海运专业英语词汇(D6)

1、航海及海运专业英语词汇(D6)航海及海运专业英语词汇(D6)航海及海运专业英语词汇(D6)double full ahead!再进三double full ahead!再进三！double full astern!再退三double full astern!再退三！double full astern 再全速倒车double gear 二级齿轮传动装置double geared drive二极齿轮传动二极齿轮传动装置double geared二级齿轮传动的double girder crane双梁起重机double goods operations货物双重作业double governor双重

2、调节器double grid tube双栅极管double groove weld双面坡 口 焊缝double groove 双面坡 口double half hitch 两半结double hatches 双联舱口double helical gear人字齿轮double helical gears 人字齿轮double helical tooth 人字齿double hinge-type rocker arm端部摇臂double hook抱钩double hook双抱钩double hoop closing双箍闭合double hoop closing双箍闭合double hull boa

3、t双壳体船double hull concept双壳概念double hull configuration双壳结构double hull construction 双壳构造double hull structure双壳结构double hull tank 双壳舱double hull tanker design双壳油船设计double hull tanker双壳油船double hull （集装箱专运船double hull双层船壳double hull双层船壳（集装箱专运船double hull双层壳体double hulled双壳体的double hydrofoil craft双水翼艇do

4、uble image lens 双向透镜double image 双图像double imagedouble injectordouble insulationdouble insulationdouble insurancedouble insurancedouble insurancedouble integraldouble intended circledouble interpolationdouble iron planedouble iron pulley blockdouble iron 工字铁双图象复式喷射器双层绝缘双绝缘双保险双重保险双重保险重复保险重积分双凹圆双内插双铁手

5、刨双轮铁滑车double joint 双缝接头double journey往返航程double king post双起重柱double ladder dredger双吸管架挖泥船double larks head两层双合套double lead cable 双芯铅包电缆double lead 双引线double lever type双杠杆式double limiting 双向限幅double line双线双轨double lobe system双波瓣系统double locks 双闸门double luff tackle 3-2绞辘double luff绞辘double luff五饼滑车组（上

6、三饼double make contact双闭合触点double male fitting 双凸形配件double male固定上下集装箱的）双头插销双头插销double male 双头插销double metal 双金属double model 叠模（为了消除自由水面影响double motor alternator双电动交流发电机double motor and alternator双电动交流发电机double nipples reduced大小头螺纹接管double nipples 双头螺纹接管double non-return valve双止回阀double nozzle 双头喷嘴do

7、uble nuts 双螺母double open end wrech 双头开 口 扳手double open end wrench双头开 口 扳手double paddle两头桨double paddle双头划桨double pillar 双列支柱double pipe brine cooler 双套管盐水冷却器double pipe condenser双套管冷凝器double planking双层外板double plate balanced rudder覆板平衡舵double plate balanced rudder复板平衡舵double plate bulkhead双板舱壁double

8、 plate rudder覆板舵复板舵double plate rudder复板舵double platle balanced rudder复扳平衡舵double plug 双插塞double plunger pump双柱塞泵double pole mast 双腿架double pole single-throw双刀单投double pole双杆double pole双极double prismatic square 直角棱镜double pulse station 双脉冲发射台double pulse 双冲量double pulsing一个台站发射两种重复频率劳兰信号double pulsi

9、ng一个台站发射两种重复频率罗兰信号double purchase 1-1 绞辘double purchase双轮油车组双绞辘1-1绞辘绞辘double rail motor crab双轨电动起重机double rail motor hoist双轨电动起重机double reaction 双重反馈double reduction gear box二级减速齿轮箱double reduction gear两级减速齿轮double reduction gearing两级减速齿轮double reduction 二级减速double reduction-locked train功率分轴式二级减速齿轮d

10、ouble reduction-locked train功率分轴式二级减速齿轮系功率分轴式二级减速齿轮double resistance box 双电阻箱double rigging luff 2-1与2-1复绞辘double rigging luff 2-1与2-1复绞辘与2-1复绞辘与2-1复绞辘double ringahead再进三double ringastern力速后退double ringastern再退三double ring full ahead双车前进三double ring full astern双车后退三double riveted joint双行钟接头double ri

11、veting双行钟接double riveting双行钟接双行钟接头double roller chock双滑轮导缆器double rotor turbine 双转子涡轮机double row ball bearing双歹！J球轴承double safety valve 双联安全阀double salt water distilling plant两级串联造水装置double salt 复盐double scale 双标度double screw双螺旋桨双头螺纹double sculling 单人双桨艇double seal valve 双密封阀double seam双重接缝double se

12、cond difference倍程二次差double sensor双电阻传感器double shafting 双轴系double shear 双剪double sheath双层外皮double sheet bend双编结double shell form双壳船型double shell 双层外壳double shielding 双层保闭式叶轮泥浆闭式叶轮泥浆泵double shrouded impeller type sand-pump泵double shrouded impeller type sandpumpdouble shut双重关闭double side band 双边带double

13、 side freight tariff双边费率本double side open wagon高边敞车double side-band 双边带double sight不同时测天double silk-covered wire 双丝包线double silk-covered 双丝包的double size双倍尺寸double skin barge 双壳驳double skin boat 双壳艇double skin 双壳double sling 双头吊索double source 双源double span mooring双跨底链系船设施double span moorings 双跨底链的系船浮

14、筒double spanish burton 2-1 与定单复绞辘double spring hinge双弹簧钱链double square normal closed double head spaner套方环形双头扳手double squirrel-carge induction motor 双鼠笼式感应电动机double stack container train可载二层集装箱的火车double star connection双星接法double star 双星double stopper hitch双掣索结double strand 双股double stroke 二冲程double

15、summer time双重夏令时double summer time双重夏令时提前二小时的夏令时double summer time提前二小时的夏令时double summer time=british double summer time英国提前二小时的夏令时double supported rudder双支承舵double surface transistor双面晶体管double swivel hook双旋转钩double t joint 十字接头double t steel i 字专冈double t i 形材double taxation relief双重课税减免double the

16、 angle on the bow 船首倍角法double thread双头螺纹double threaded screw双纹螺丝double throw crankshaft 双联曲柄轴double throw switch双掷开关double tide复潮double tide双潮double transmission双波发送double triangles six rayed star 六角星double tube plate condenser双管板冷凝器double type wedge双面楔双极插头double type 倍增式double u groove 双面 u 形坡口dou

17、ble u-weld 双 u 形坡口焊double universal coupling双万向联轴器double up and secure!力口双缆挽紧double up 加双绑double v groove 双面 v 形坡口double value clause双重价值条款double voltage rectifier二倍压整流器double volute pump双蜗壳式离心泵double wall knot 双花绳端结double wall piping system双层壁管系double wedge boat直框结构船double wedged boat直框结构船double wh

18、arfage加倍码头费（船舶未付码头费离港double whip system 分钩装卸法（一根吊货杆将货由岸吊到甲板double whip 1-1绞辘double whip 1-1绞辘绞辘double whip双半绞辘double winding armature双绕组电枢double windlass双联锚机double wire gauge 双层线规double wire system 双线制double wound双绕组的double wrench双头扳手double a. 双重的double 倍double 两倍的double 双重的double-acting capstan双动手摇

19、绞盘double-acting cylinder双作用油缸double-acting double piston rod oil cylinder双作用双活塞杆式油缸double-acting engine双作用式发动机double-acting hand force pump以作用手摇泵double-acting oil cylinder双作用油缸double-acting piston pump双作用式活塞泵double-acting piston双作用活塞double-acting power unit双作用式动力机组双作用执行部件double-acting pump双作用泵double

20、-acting single piston rod oil cylinder双作用单活塞杆式油缸double-acting vane pump 双作用叶片泵double-acting 双作用的double-armature motor 双电枢电动机链式二级减速器double-articulated reductordouble-banking 并靠double-base diode双基极二极管double-beam oscilloscope 双踪示波器double-berth room 双铺舱double-bevel butt weld k形坡口对接焊缝double-bevel butt we

21、ld k形坡口对接焊缝双闸刀开关double-bitt 双重带缆柱double-bladed knife switchdouble-block and bleed assembly双止回装置和放气设施double-bottom compartment 双层底舱double-bottom margin双层底边板double-bottom space双层底空间double-bottom tank双层底舱double-bottom tank双重底液舱double-bottom trailer combination双联拖车double-bottommargin plate内底边板double-bot

22、tommargin双层底边板double-break contact双开路接点double-break push button双断按钮双路油压自锁double-casing volute pump双壳体离心泵double-circuit oil pressure self-closing valve双电路三相线路双爪式挠性联轴节双爪式挠性联轴器双炉镇锅炉双联双胀式蒸汽机double-circuit three-phase linedouble-circuit双电路的double-claw flexible coupler double-claw flexible couplingdouble-

23、combustion boiler double-compound enginedouble-cone clutch双锥面离合器double-contact freezer双面接触式冻结装置double-contact key双接触电键double-cotton covered双纱包的double-cotton covered双纱包的双纱包的double-current generator双流式发电机double-current relay双流式继电器double-current simplex circuit双流式单电路double-current system 双流制double-cyli

24、nder 双缸double-deck 双层甲板double-decker双层甲板船double-diode pentode双二极五极管double-drum boiler双锅筒锅炉double-drum winch双卷筒绞车double-element wattmeter 二元瓦特表double-end adjustable spanner双头活络扳手double-end cylinderdouble-end shearsdouble-ended boilerdouble-ended boilerdouble-ended ferrydouble-end callipers with depth

25、 gauge带深规的双头卡尺双头缸双面压剪机双面燃烧式锅炉双头锅炉双面燃烧式锅炉首尾同型渡船double-ended magnetron两端出线磁控管double-ended open jawed spanner双头开 口 爪形扳手double-ended piston双端活塞double-ended spanner双头扳手double-ended vessel两头船double-ended wrench 双头扳手double-entry compressor 双进 口 压缩机double-entry pump双进 口 泵double-evaporation boiler两极蒸发锅炉doubl

26、e-face sluice valve双面闸阀double-faced box slide valve 双面滑阀double-faced pallet双面托盘double-flow reaction turbine 双流反动式汽轮机双流式汽轮机double-flow steam turbinedouble-flow type boiler双侧式锅炉double-flue boiler双炉胆锅炉double-fluid cell双液电池double-fluked anchor 双爪专苗double-frequency generator 双频发电机double-handling 两次转运doub

27、le-head automatic transmitter 双机头 自 动发报机double-headed arrow 双箭头double-headed rail 工字轨double-header boiler双筒式水管锅炉double-helical gearbox人字齿轮减速器double-hook oil ring双刃刮油环double-hulled ship 双壳体船double-impeller pump双级离心泵double-impeller pump双叶轮泵double-joint deck crane双转柱甲板吊车double-layer coil tube双层盘管double

28、-layer winding双层绕组double-leaf door双截门double-opposedram steering gear双列对置柱塞式操舵装double-pass boiler双烟道锅炉double-piston pump 双活塞泵double-plate bulkhead双层板舱壁double-plate clutch双盘式离合器double-plate keel双层板龙骨double-plate keel组合龙骨double-plate rudder 双板舵double-plate semibalanced rudder覆板半平衡舵double-plate semibala

29、nced rudder复板半平衡舵double-ply 双层double-pole contactor 双极接触器double-pole cut-out双极断路器double-pole double-throw switch双刀双投开关double-pole double-throw双刀双投（开关double-pole fuse 双极熔断器double-pole single-throw双刀单投double-pole socket 双极插座double-pole switch 双刀开关double-popet throttle valve双座节流阀double-poppet valve双座提阀

30、双路循环式锅炉双汽口滑阀双辘绞车双脉冲法双绞辘式起货装置双量程仪表双量程记录式流量表double-pressure boiler double-proted slide valve double-puchase winch double-pulse method double-purchase gear double-range instrumentdouble-range recording flowmeterdouble-range双量程的double-reduction gear二级减速齿轮double-reduction gearbox双级减速齿轮箱double-reduction s

31、team turbine installation二级减速齿轮 汽轮机装置二次再热式汽轮机double-reheat steam turbinedouble-response controller双重作用控制器double-return valve双回流阀double-reveted joint双行钟接double-reveted lap 双行钟钉搭接double-reveted seam 双行钟接缝double-rigged装有双吊杆的double-riveted seamdouble-rigging luff 双套复滑车组双行钟接缝double-riveted 双行钟接的double-ro

32、pe pulley 双索滑轮double-row bearing双排轴承double-row disk 双排涡轮盘double-scale instrument 双标度仪表double-screw vessel 双桨船double-seal valve双密封阀double-seat stop valve双座截止阀double-seat valve 双座阀double-seated ball valve 双座球阀double-shear joint双剪接合double-shear lap riveting双剪搭接钟接double-sheave top lift block双轮千斤索滑车doubl

33、e-sheave wooden block双轮木滑车double-sideband suppressed-carrier modulation抑制载波的双边带调制double-sided compressor双进口 压缩机double-sided impeller 双进 口叶轮double-skin construction 双层壳结构double-skin pontoon hatchcover底面铺板箱形舱口盖double-skin ship双壳体船double-skinned products carrier 双层壳板成品油船（油舱壁无扶强材double-slipper crosshead

34、双导板十字头double-socket pipe 双承接 口double-stage air pump双级空气泵double-stage compressive refrigerating system 双级压缩制冷系统double-stage compressor 双级压缩机double-stage pump双级泵double-stage turbine双级涡轮机double-start thread双头螺纹double-state compass双态罗经double-step glider双断级滑行艇double-strap joint双搭接接合double-strapjoint 双搭接接

35、合double-suction pump双吸泵double-suction ventilator 双吸 口 通风机double-tape armored双带铠装的double-throw contact双投触点double-throw crankshaft 双臂曲轴double-throw disconecting switch双投隔离开关double-throw 双投double-tube injector双管喷射器double-tube sheet 双管板double-unit alternator双输出交流发电机double-unit motor双枢电动机double-unit moto

36、r同轴双电动机组double-valueness 双值性 double-way connection双向联结double-way connection双向连接double-way lauching 双滑道下水 double-welled cylinder section 双层壁气缸组 double-welled cylinder section 双层壁汽缸组 double-winding alternator 双绕组交流发电机 doublebottom 双重底 doublecabin 双人舱 doublecapstan双卷筒绞盘doubled up swinging booms 双旋回联杆 d

37、oubledoubler复板倍压器doubleiron plane双铁手包”doubleiron pulley block双轮铁滑车doublelead cable双芯铅包电缆doublelever type双杠杆式doublelift cam双杠杆式doublelift cam双升程凸轮doubleline双线双轨doublemake contact双闭合触点doublemetal 双金属doublemotor and alternator双电动交流发电机doublenipples reduced大小头螺纹接管doublenipples 双头螺纹接管doublenon-return valv

38、e 双止回阀doublenuts 双螺母doubleoffset ring spanner梅花扳手doubleoil ring双联刮油环doubleopen end wrech doublepipe brine cooler doublepipe condenser doubleplug 双插塞 doubleplunger pump doublepole single-throw doublepole双极双杆双头开口扳手双套管盐水冷却器双套管冷凝器双柱塞泵双刀单投doublepresure ring双压力环doublepulse 双冲量doublepurchase 双轮油车组双绞辘double

39、r plate覆板加强板doubler plate复板加强板doubler 倍加器doubler 倍加器复板doubler 倍压器doubler 复板doubler复板倍压器doublereaction双重反馈doublereduction gear box二级减速齿轮箱doublereduction二级减速doublereduction-locked train功率分轴式二级减速齿轮系doubleresistance box 双电阻箱doubleriveting 双行钟接doublerotor turbine 双转子涡轮机doublerow ball bearing双歹！J球轴承double

40、s 双联拖车doublesafety valve双联安全阀doublesalt water distilling plant两级串联造水装置doublesalt 复盐doublescrew 双螺旋桨双头螺纹doubleseal valve 双密封阀doublesensor双电阻传感器doubleshafting 双轴系doublesheath双层外皮doubleshell 双层外壳doubleshrouded impeller type sand-pump 闭式叶轮泥浆泵doubleside band 双边带doublesilk-covered wire双丝包线doublesource 双源d

41、oublespring hinge 双弹簧绞链doublesquare normal closed double head spaner 套方环形双头扳手doublesquirrel-carge induction motor双鼠笼式感应电动机doublestar connection双星接法doublestrand 双股doublestroke 双行程doublesurface transistor 双面晶体管doublet antenna偶极天线doublet i 形材doublet joint十字接头doublet steel i 字专冈doublet偶极子偶极天线双重线副本double

42、t偶极子偶天线双重线复制品doublet 偶天线doublet偶天线复制品偶极子偶极天线双重线副本doublethread 双头螺丝doublethread 双头螺纹doubletransmission 双波发送doubletube plate condenser双管板冷凝器doubletype wedge双面楔双极插头doubletype 倍增式doubleu-weld 双 u 形坡口焊doubleuniversal coupling双万向联轴器doublevolute pump双蜗壳式离心泵doublewelding 双面焊doublewhip双半绞辘doublewinding armat

43、ure双绕组电枢doublewire gauge双层线规doublewire system双线制doublewound双绕组的doublewrench 双头扳手doubling of the bow船首加强板doubling plate覆板doubling plate复板加强板doubling plate加强钢板doubling plate双层板doubling preventer clamp两节桅接头防护铁doubling strake二重歹 U 板doubling the angle on the bow船首倍角法doubling up 加双绑doubling 加倍doubling加倍;双

44、重;折叠;折回;防护板;加强板doubling加倍双重折叠折回防护板加强板doubly 成两倍doubly-fed polyphase shunt commutator motor双馈多相并励换向器电动机doubly-fed reentrant winding双线线圈doubly-fed repulsion motor双馈推斥电动机doubtful position 可疑船位doubtful sounding可疑测探doubtful sounding可疑的水深doubtful 可疑doubtful可疑可疑的doughnut 环形;汽车胎；doughnut环形汽车胎doughnut-shaped

45、 pressure housing轮胎形耐压壳douglas classification of wave道格拉斯浪级douglas fir 黄杉douglas protractor道氏量角规douglas scale道氏浪级表douglas scale海况标度douglas sea and swell scale 道氏浪、涌级表douse the glim 熄灯douse the lights 熄灯douse急松dousedovetaiblade fastening燕尾形叶片固定dovetaicapacitor 同轴调整电容器dovetaicutting 燕尾切削dovetaigroove

46、燕尾梢dovetaidovetaidovetaijackjointjoint燕尾插孔燕尾形接合燕尾形接头dovetail kevway燕尾键梢dovetail key 燕尾键dovetail keyway燕尾键梢dovetail mitre燕尾形斜面接合dovetail mortice燕尾桦眼dovetail mortise楔形接棒dovetail mortise燕尾形桦眼dovetail plate鱼尾板dovetail plate桦眼板dovetail slot 燕尾梢dovetail 燕尾dovetail燕尾形;楔形桦dovetail-indent 燕尾梢dovetailing mach

47、ine 制样机dovetailing燕尾桦接合dowel 定位销dowel bolt暗销螺栓dowel disc定位盘dowel handle定位销把手dowel joint暗销结合；暗销接头;定缝钉接合dowel joint暗销结合暗销接头定缝钉接合dowel joint定缝钉接合dowel pin 定位销dowel plate 暗销板dowel 定位销dowel定位销定缝销钉木钉doweling 定位doweling 定位用暗销钉钉合down lead 引下线down below 在下面down blow 下排污down bound 下水down by the bow down by th

48、e bow down by the bow down by the head down by the head down by the stern down by the stern down by the stern down by the bow头倾船首纵倾船首纵倾船）首倾首倾船尾纵倾船尾纵倾船）尾倾尾倾头倾down cast n.（downtime n. 机舱down cast 锅炉）降水管down comer 锅炉）降水管down comer=downcomer 降水管down converter降频变换器down converter下送变换器down current 下曳汽流down

49、 draft 下曳汽流down hill direction welding 下向焊接down lead 引下线down link 下行线路down milling 顺铳down oars port!左舷放桨down oars starboard!右舷放桨down payment 定金down payment 订金down pipe 下降水管down pipe 下降水管立管down pipe 下水管down pitch 首倾down price clause减价契约条款down stroke下行行程down stroke=downstroke下行行程down sweep 下扫描down swe

50、ep下扫推i下向扫推idown sweep 下向扫描down time不工作时间down time计算机发生故障或操作错误的时间 停 时间;窝工 时间down time计算机发生故障或操作错误的时间停时间窝工时 间不工作时间down to her marks 下沉至标志down to her marks 装到满载吃水down upon edge 逼近所追赶的船down wind 顺风向down a. 向下的down 砂丘down 向下down向下;在下面;倒下;降;向下游航驶 渺丘沙岗;丘陵;绒毛down 向下的down-bound vessel 下行船down-cut milling 顺洗d

51、own-flow pipe下降水管down-flow pipe下水管down-flow 下降流down-flowpipe 下水管down-hand welding 平焊down-pitch angle 船首纵倾角down-sideband 下边带down-take feed header 下降供水联箱down-take pipe 下降水管down-time 机舱down-time=downtime n.（ 机舱down-turned broom 喇叭口在下的航标down-wind leg顺风航程downcast and uptake ventilator下向和上向通风筒吸排气两用通风机down

52、cast pipe 降水管downcast tube下降管立管直浇口downcast ventilator吸气通风筒downcast ventilator下向通风筒downcast 锅炉）降水管downcast 降水管downcomer 降水管downcomer锅炉）降水管downcomer 降水管downdraft下部吹除下部抽风downdraft 向下气流downfall 坠落崩坏downgrade水平下弯度downhand weld俯焊downhand weld俯焊焊缝downhand welding俯焊downhand welding平焊downhaul 落帆索downlead 下弓I

53、线downlead 弓I下线downlead 引下线引下线downpour 倾盆大雨downrating 降功率运行downright 直下;垂直;完全downright直下垂直完全downsprue 直浇口downstairs 楼下的downstream chain 惰链downstream end 出 口 接管downstream end出 口 接管出 口 端downstream floating of bamboo or log raft竹、木排流放downstream floating of log raft 木排流放downstream heat exchanger顺流热交换器dow

54、nstream vessel 顺流船downstream a. 顺流的downstream 顺流的downstream 顺流的向下游downstream 向下游downstroke 下行冲程downstroke 下行行程downtake 下导管downthe helm转舵使船背风downtime （机舱downtime 故障时间downtime 停工期downton pump邓通曲柄手摇泵downward broom向下帚形downward communication下行沟通downward storke下行行程downward stroke下行冲程downward ventilator下向通

55、风筒向下立焊downward welding in the vertical positiondownward welding 平焊downward向下地向下的downward 向下向下地downwind 顺风方向dowse 急松doze 腐朽dozen 打（数量单位dozen 打dozy （木材dozy快要腐烂的；令人欲睡的dozy令人欲睡的（木材dr driesdraco 天龙星座draco 天龙座天龙星座dracone 弹性拖曳容器draconis 天龙星座的draconitic month 交点月draconitic year 交点年dracontic month 交点月dradge

56、boat拖网渔船draft aft船尾吃水draft aft尾吃水首垂线处吃水draft at float-out 出坞吃水draft at forward perpendiculardraft at midlength 船中部吃水draft attached汇票随附draft blower 排风机draft check plate通风道挡板draft coefficient吃水系数draft constant吃水常数联合运输条约草draft convention on combined transport案draft damper通风调节门draft damper通风阀draft diffe

57、rence吃水差draft difference纵倾draft equipment通风设备draft extreme最大吃水draft extreme最大吃水龙骨吃水最大吃水draft fan 通风机draft figure 吃水数标draft figures 吃水尺度draft flue排气烟道draft fore船首吃水draft fore首吃水draft forward船首吃水draft forward船首吃水首吃水draft full load满载吃水满载吃水装载量draft full load满载吃水装载量draft full load满载吃水装载量满载吃水draft functio

58、n method 吃水函数法draft gauge吃水指示器；通风计draft gauge吃水标尺draft gauge吃水指示器通风计draft gauge通风计draft guage通风计吃水标尺draft head通风压头draft hole 通风孔draft indicator差式压力计draft indicator吃水指示器draft indicator吃水指示器；通风计;差式压力计draft indicator通风计压差式压力计draft inlet 进风口draft inlet 通风口draft intensity通风强度draft international standard国

59、际标准草案draft mark 吃水标志draft markings 吃水标志draft marks吃水标志draft mechine 制图机draft memo 水尺换算表draft meter 吃水标尺draft midship 船中部吃水draft midship船中部吃水船中吃水draft midship船中吃水draft molded型吃水draft moulded型吃水draft numerals吃水标志draft outlet通风出 口draft outlet通风口draft pressure通风压力draft proposal建议草案draft reading rule吃水标尺

60、draft register 通风调节器draft regulator通风调节器draft scale 吃水标尺draft scale 载重标尺draft scale 载重标尺载重标尺draft scales 吃水标尺draft spring 牵弓 I 簧draft standard标准草案draft stop 风挡draft survey吃水检查draft survey吃水检量draft system通风系统draft tube 通风管draft markdraft 吃水draft吃水;一吊货;顿服量;通风;汇票draft 吃水通风draft 吃水通风船）吃水draft 吃水通风船舶吃水dr