轮机英语课件重要

1、一、专业词汇翻译1. Connecting rod 连杆/活塞杆3. top dead center 上止点/下止点2. four-stroke diesel engine 四冲程柴油机4. reduction gear box6. cylinder liner 气缸套齿轮箱5. cooling jacket冷却水套7. piston skirt 活塞裙/活塞环8. running-in period 磨合期9.船用排气锅炉 marine exhaust gas boiler 10. crpin bearing 曲柄销轴承11.吸气行程 suction stroke/压缩冲程12. circu

2、lating pump 循环泵13. sea water cooling system 海水冷却系统 14. indicateder 指示功/效率15. compres 17.废气再循环ratio 压缩比 16. 废热回收系统 waste heat recovery system exhaust gas recirculation 18. 扫气口 scavenge port/扫气箱19.船级社 classification society21. inlet valve 进气阀/排气阀23. main starting valve 主启动阀20.22.24.辅助风机 auxiliary blow

3、er涡轮增压器 turbocharger曲轴 crshaft25.机架/燃烧室/直流扫气/头滑块/导板二、英译汉1It is usually desirable to fit charge-air coolers to turbocharged two-stroke engines.The coolers are located betn the turbo-blowers and the cylinders. As thecharge-air density increases, the amount of air flowingo the cylinders is increasedand

4、 as the charge-air temperature lowers, the exhaust temperature and the enginethermal loading are reduced.1对于涡轮增压式二冲程发来说，通常希望能装有增压空气冷却器。冷却器位于涡轮压气机和气缸之间。由于增压空气密度增加，流进气缸的空气量也就增加，并且随着增压空气温度的降低，排气温度和发热负荷也降低。2. Air supply is very important to perfect combustion of fuel oilhe diesel engine.As the air densi

5、ty determines theum weight of fuelt can be burnt perworking stroke in the cylinder, it also determines the developed by the engine.umert can be2. 供给空气对柴油机内燃油的充分燃烧是非常重要的。因为空气浓度决定气缸每一工作冲程可供燃烧的最大燃油量，所以也可决定主机发出的最大功率。3.he cylinder, friction is mainly caused by the rub betn thston rings andthe liner walls

6、. The piston rings conditions which range from ra Without sufficient lubrication, thexerts a varying prere on the liner wall underchange of speed to reversal of moving directions. stons may run hot, seize or even break down.3. 在气缸内，摩擦主要是由活塞环和气缸壁之间的摩擦所产生的。活塞环在不同的情况下对气缸壁施加不同的压力，包括迅速改变速度到改变运动方向。没有足够的润滑

7、，活塞环就可能变热、咬缸，甚至断裂。4. Thston crown is of fed steel and is designed forensive cooling, the centralsupporting body is of cast steel and is mainly subjected to compressive stress. A singlepiecston skirt fitted with bronze rings guides thstonhe cylinder liner. Thepiston ring grooves for a standard engine

8、 are flame hardened against wear.5. 活塞头由锻钢制成且设计成集中冷却，中部支撑体是铸钢制成的，主要承受压应力。一个装有青铜环的单片活塞裙在气缸套内对活塞起导向作用。对一个标准的发来说，活塞环槽是经过淬火处理的，以便耐磨损。三、阅读理解1. A water cooling system for a slow speed diesel engine is dividedo two separatesystems: one for cooling the cylinder jackets, cylinder heads and turbo-blowers; the

9、 other for piston cooling. The cylinder jacket cooling water after leaving the enginepasses to a sea water circulated cooler and then pumps. It is then pumped around the cylindero the jacket water circulating jackets, cylinder heads and and water make-up in the for the release of air fromturbo-blowe

10、rs. A headerallows for expansystem. Vents are led from the engine to the headerthe cooling water. A heaterhe circuit facilies warming of the engine prior to starting by circulating hot water. The piston cooling system employ similarcomponents, exceptt a drais used instead of a headerand the ventsare

11、 then led to high poshe machinery space. A separatston cooling systemis used to limit any contamination from piston cooling glands to th system only.ston cooling1). How does the cooling water circulatehe cylinder jackets, cylinder heads and turbo-blowers cooling system?A. It flows from the cylinder

12、jackets, cylinder heads and turbo-blowers, and cools the jacket water circulating pump.B. It flows from the cylinder heads and passes pump.o the jacket water circulatingC. It is pumped through the cylinder jackets, cylinder heads and turbo-blowers and then passes through the heater.D. The cooling wa

13、tasses the cooler and the jacket water circulating pumpsbefore it entero the cylinder jackets, cylinder heads and turbo-chargers.2). What does a heater attribute tohe circuit?It warms up the engine before starting by circulating hot water.It heats the cylinder jacket cooling water to start the engin

14、e.It warms up the back parts of the engine.It makes starting of the engine easy.3). What does the headerfunction?Water expanWater make-up.Air release.D. All of the above. 4). What does not thston cooling system employ?A draA headerA cooler.D. A circulating pump四、汉译英1. 在主机工作时，随着热负荷的增加，过高的排气背压将导致主机运行故

15、障。During working, exsive exhaust gas back prere may lead to the main engineoperating difficulties as the heoad increases.2. 燃油在输入日用柜前，必须把油中的所有水分和其他杂质分离出来。All the water and other impuritieshe fuel oil must be removed before the oil issent to the daily service.3发上装有调速器，它依靠调节燃油喷射量来调节发速度。The engine is provided wiernor which is designed to regulate the enginesspeed by adjusting thety of oil injected.例如来源于的简单英译汉：A die