pendulum clocks信息详情
[仪]摆钟
clocks───n.钟表；[仪]时钟（clock的复数）；v.为…计时（clock的三单形式）
pendulum───n.钟摆；摇锤；摇摆不定的事态
mantel clocks───炉上饰钟
pendulum board───摆板
pendulum bob───（钟）摆锤；[仪]摆锤
chiming clocks───自鸣钟
cycloid pendulum───圆滚线摆
pendulum clock───[仪]摆钟
atomic clocks───原子钟
Well-run pendulum clocks in the 1660s differed by only about 15 seconds a day. Non-pendulum clocks of the same era (ones that used rotating wheels) varied by about 15 minutes a day.───在17世纪60年代，一台运行良好的摆钟一天的误差只有15秒，而同时期的非摆钟的钟表(即采用回转轮的钟表)运行一天则有15分钟的误差。
Unlike the original form used in early pendulum clocks, the anchor escapement permitted the pendulum to travel in a very small arc.───与在早期摆钟中使用的原始形式不同，锚擒纵装置允许钟摆沿非常小的弧线运动。
Some old pendulum clocks are very beautiful. They were made carefully and they still work well.───有些古老的摆钟很美观，制作精巧，至今仍走得很好。
It was discovered that pendulum clocks recorded time differently depending on their location.───人们发现摆钟在不同的地点所记录的时间不同。
we frequently see on pendulum clocks , for example , two soldiers propped over a cornice playing dice or cards , or even sleeping.───例如，我们经常可以看到，在钟楼上，两个士兵倚着门掷色子或打扑克，甚至睡觉。
The National Institute of Standards and Technology used pendulum clocks to keep official time until the 1930s.───直至20世纪30年代，NIST还仍在采用摆钟作为标准计时工具。
What's the meaning of mechanical pendulum clocks and quartz clocks, there is───机械摇摆的钟和石英表吗