WATCH
温馨的记忆Definition
A watch is a timepiece that is made to be worn on a person. It is usually a wristwatch, worn on the wrist with a strap or bracelet. In addition to the time, modern watches often display the day, date, month and year, and electronic watches may have many other functions.
爱与恶的计谋Parts(take wrist watch for example)
Movement
The mechanism that measures the passage of time and displays the current time (and possibly other information including date, month and day). Movements may be entirely mechanical, entirely electronic (potentially with no moving parts), or a blend of the two. Most watches intended mainly for timekeeping today have electronic movements, with mechanical hands on the face of the watch indicating the time.
●Mechanical movement
less accurate than electronic movement, often with errors of conds per day, and they are nsitive to
position and temperature. As well, they are costly to produce, they require regular maintenance and adjustment, and they are more prone to failure.
●Electronic movement/quartz movement
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Electronic movements have few or no moving parts, as they u the piezoelectric effect in a tiny quartz crystal to provide a stable time ba for a mostly electronic movement. The crystal forms a quartz oscillator which resonates at a specific and highly stable frequency, and which can be ud to accurately pace a timekeeping mechanism. For this reason, electronic watches are often called quartz watches.Most quartz movements are primarily electronic but are geared to drive mechanical hands on the face of the watch in order to provide a traditional analog display of the time, which is still preferred by most consumers.
Watch power
Watch batteries (strictly speaking cells, a battery is compod of multiple cells) are specially designed for their purpo. They are very small and provide tiny amounts of power continuously for very long periods (veral years or more). In most cas, replacing the battery requires a trip to a watch-repair shop or watch dealer; this is especially true for watches that are designed to be water-r
esistant, as special tools and procedures are required to ensure that the watch remains water-resistant after battery replacement.耐人咀嚼
单位介绍信Dial
Mainly ud to show time, and bearing to the watch-designing, can be different shapes, can be made from different materials, and the index can be relief and planographic printing.
Ca
Avoid external dust, dew, or vibration damage, providing a fashionable and charming appearance for wrist watch at the same time.
小型加工致富项目Bottom
Protecting the internal watch movement, water-resistance mark can be found on it, there are 3 locking styles: hinge-screw-locking, the pressure-locking and screw-locking.
Band/bracelet/strap
Be made from fiber or metal, for keeping the watch on your wrist.
Hand
To indicate the specific time, usually there are 3 hands indicating the cond, minute and hour. Button军事理论教程
A button is ud to connecting the belts, there are Turtle button, double-click button, solid flashboard button, butterfly button and buckle button.
Looking glass
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The glass to protect the dial.
Frame/bezel
To lock the looking glass tightly, 2 types, 1 is fixed frame with polished appearance, the other is openable frame, mainly ud for sports wrist watch (we can calculate the overlapping time by making its 0 hand to minute hand).
Head
Be ud to correcting the time and date, wind, is made from steel or gold.
