watchEnglishspeech关于手表的英文.pptxVIP

Watch 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）①Manual mechanical watches (手动机械表)Traditional mechanical watch movements use a spiral spring called a mainspring as a power source.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。弹簧必须定期由用户通过转动表冠倒带。大多数现代腕表的设计每个绕组可运行40小时，因此必须每天上发条，但有些可运行几天或更长时间，并每周上发条便可。）Classification②Automatic mechanical watch （自动机械表）Automatic mechanical watch is one that rewinds the mainspring of a mechanical movement by the natural 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 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作为动力，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，绕组转子耦合到背面的往复运动棘轮以自动缠绕主发条，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不足。）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。)Classification5 Automatic quartz watch（自动石英表）Classification6 Solar-powered watch （光动能手表）Famous 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So