watch English speech 关于手表的英文PPT

1、 Zhang Tao School of TextilesDont you know watch?A watch is a small timepiece intended to be carried by a person. A wristwatch is designed to be worn on a wrist, attached by a watch strap. It is designed to keep working despite the motions caused by the persons activities.腕表是由一个人佩戴的小的计时器,它的设计是通过表带戴在

2、手腕上,目的是保持工作，而不受人的活动影响。Functions1 Show time 显示时间2 Personal adornment 个人装饰品3 Collectible works of art 收藏品4 Specific functions 特定功能Classification1 Mechanical watch（机械表）Manual mechanical watches (手动机械表手动机械表)Traditional mechanical watch movements use a spiral spring called a mainspring as a power source.

3、The spring must be rewound periodically by the user by turning the watch crown.Most modern watches are designed to run 40 hours on a winding and thus must be wound daily, but some run for several days and a few have 192-hour mainsprings and are wound weekly.(传统的机械表机芯使用一个螺旋弹簧称为发条作为动力源。弹簧必须定传统的机械表机芯使用

4、一个螺旋弹簧称为发条作为动力源。弹簧必须定期由用户通过转动表冠倒带期由用户通过转动表冠倒带。大多数现代腕表的设计大多数现代腕表的设计每个绕组每个绕组可可运行运行40小时，因此必须每天上发条，但有些小时，因此必须每天上发条，但有些可运行可运行几天几天或更长时间或更长时间，并每周，并每周上上发条发条便可。便可。）ClassificationAutomatic mechanical watch （自动机械表）Automatic mechanical watch is one that rewinds the mainspring of a mechanical movement by the nat

5、ural motions of the wearers body.It uses an eccentric weight, called a winding rotor, which rotates with the movement of the wearers wrist.The back-and-forth motion of the winding rotor couples to a ratchet to wind the mainspring automatically.Self-winding watches usually can also be wound manually

6、to keep them running when not worn or if the wearers wrist motions are inadequate.（自动腕表由穿着者的身体的自然运动倒带机械机芯自动腕表由穿着者的身体的自然运动倒带机械机芯作为作为动力动力，它采用偏心它采用偏心重块，称为一个绕组转子，其与穿用者的腕的运动旋转重块，称为一个绕组转子，其与穿用者的腕的运动旋转，绕组转子耦合到背绕组转子耦合到背面的往复运动棘轮以自动缠绕面的往复运动棘轮以自动缠绕主主发条发条，自动上链腕表通常也可以手动上弦，自动上链腕表通常也可以手动上弦，来使手表正常运行，防止佩戴者不戴手表或者手腕运动

7、不足。）来使手表正常运行，防止佩戴者不戴手表或者手腕运动不足。）2 Quartz watch（石英表）A quartz watch uses an electronic oscillator that is regulated by a quartz crystal to keep time.This crystal oscillator creates a signal with very precise frequency , so that quartz watches are at least an order of magnitude more accurate than mecha

8、nical watches .Quartz watches use watch batteries which are very small and provide tiny amounts of power continuously for very long periods.(一个石英一个石英手表手表使用使用受石英晶体控制的受石英晶体控制的电子振荡器电子振荡器来来保持时保持时间间，这种晶体振荡器创建具有非常精确的信号频率，以使石这种晶体振荡器创建具有非常精确的信号频率，以使石英英表比最好的机械表更精准，表比最好的机械表更精准，石英手表电池非常小，但续航石英手表电池非常小，但续航时间很长。时

9、间很长。)Classification3 Smartwatch (智能手表)A smartwatch is a computerized wristwatch with functionality that goes beyond timekeeping.Many run mobile apps , using a mobile operating system. Some smartwatches function as portable media players. Some also called watch phones, feature full mobile phone capab

10、ility. Peripheral devices may include digital cameras, thermometers , accelerometers , altimeters , barometers , compasses , GPS receivers and so on.(智能手表智能手表是计算机化的超越计时功能是计算机化的超越计时功能的腕的腕表表，许多运行移动应用程序，使用的是许多运行移动应用程序，使用的是手机操作系统手机操作系统,一些智能手表作为便携式媒体播放器，有些也被称为一些智能手表作为便携式媒体播放器，有些也被称为“手手表手机表手机”，有有全面的手机功能全面

11、的手机功能,外围设备可包括数码相机，温度计，加速外围设备可包括数码相机，温度计，加速计，高度计，气压计，罗盘，计，高度计，气压计，罗盘，GPS接收器接收器等等等等)Classification4 Radio time signal watch （电波表）Radio time signal watches are a type of electronic quartz watch which synchronizes its time with an external time source.(电波表是一种时间与外部时间源同步的电子石英手表。电波表是一种时间与外部时间源同步的电子石英手表。)Cl

12、assification5 Automatic quartz watch（自动石英表）Classification6 Solar-powered watch （光动能手表）ClassificationFamous WatchVacheron Constantin (江诗丹顿)Rolex (劳力士)Longines 浪琴Tissot 天梭Titoni 梅花Citizen 西铁城Seagull 海鸥First:the watch should suit your identity. Some suggestionsSecond: choose a type Mechanical watches a

13、re typically not as accurate as quartz watches,and they require periodic cleaning by a skilled watchmaker. Since the 1970s, quartz watches have taken over most of the watch market, and mechanical watches are now mostly a high-end product, purchased for aesthetic reasons, appreciation of their fine craftsmanship,or as a status symbol.（机械手表通常不像石英手表精准，而且需要由熟练的制表师定期清洗。自（机械手表通常不像石英手表精准，而且需要由熟练的制表师定期清洗。自1970年以来，石英手表已经接管了大部分的钟表市场，而机械手表，