文中详细介绍了钟机心（clock movement）的制造过程，文中提到制作一个钟机心（clock movement）耗时非常巨大，需要溶解大量黄铜，让后重新铸造黄铜（brass）。通过这些细节描述，说明了摆钟的制造对于工匠的技艺要求特别高。
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alarm clock movement 闹钟机芯 ; 闹钟痪
quartz clock movement 石英钟机芯
wall clock movement 挂钟机芯
quartz digital clock movement 数字式石英钟机芯
mechanical pendulum clock movement 机械摆钟机芯
mechanical alarm clock movement 机械闹钟机芯
architectural large quartz clock movement 建筑用石英大钟机芯
Or Clock Movement 或时钟运动
Drum connected with the clock-movement 与时钟机心连接的鼓轮
It analyses it's characteristics and also directs and summarizes such designing of quartz crystal clock movement.
该方法对此类型石英钟机心的设计具有一定参考价值。
WEIGHT DRIVEN TOWER clock movement-many find it a challenge to build a clock that drives hands exposed to the weather.
重量驱动塔钟运动，许多觉得是一个挑战，以建立一个时钟驱动器的手接触到的天气。
In the afternoon some clock future is an union movement.
下午一点钟以后是社团活动。
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