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- Any of the rotating pointers used as indexes on the face of a mechanical clock. 指针任何一种旋转指针，用来在机械表的表面指示刻度
- A mechanism of geared wheels driven by a wound spring,as in a mechanical clock. 钟表机械，发条装置一种由齿轮组成的机械装置，由弹簧驱动，如机械表内部的装置
- THE EARLIEST RECORDED weight-driven mechanical clock was installed in1283 at Dunstable Priory in Bedfordshire, England. 史上第一座以砝码带动的机械钟，是1283年装设在英格兰贝德福郡的丹斯塔布修道院。
- THE EARLIEST RECORDED weight-driven mechanical clock was installed in 1283 at Dunstable Priory in Bedfordshire, England. 史上第一座以砝码带动的机械钟，是1283年装设在英格兰贝德福郡的丹斯塔布修道院。
- Western Europeans adopted these technologies, but by the 13th century, demand for a dependable timekeeping instrument led medieval artisans to invent the mechanical clock. 到了13世纪，由于需要更可靠的计时工具，中世纪的工匠发明了机械钟。
- FOR CENTURIES after the invention of the mechanical clock, the periodic tolling of the bell in the town church or clock tower was enough to demarcate the day for most people. 在机械钟发明后的数百年，小镇教堂或钟塔所传来的规律钟鸣声，便足以应付大部分居民在生活中计时的需求。
- The founder was a man called Georges Edouard Piaget watches and he opened his own workshop and started to craft very precise mechanical clock movements. 创立者是一个叫做乔治伯爵的人，他开设了属于自己的工厂，开始手工制造精确的机械钟的乐章。
- Beginning in the 13th century, though, the mechanical clock initiated a revolution equivalent to the one engendered by the later invention by Gutenberg of the printing press. 但是，自13世纪起，机械钟引发了一场革命，对历史的影响相当于后来古腾堡活字印刷术引发的革命。
- A mechanism of geared wheels driven by a wound spring, as in a mechanical clock. 钟表机械，发条装置一种由齿轮组成的机械装置，由弹簧驱动，如机械表内部的装置
- For example, while nearly every mechanical clock made in the last millennium consists of a series of propelled gears, this one uses a stack of mechanical binary computers capable of singling out one moment in3.65 million days. 举例来说，当几乎每个过去一千年来所制造的机械时钟，都包括一系列推动齿轮，这个时钟使用著一组机械式二进位电脑的串联，将足以标示出3百65万的日子中的每个时刻。
- Mechanical clocks were invented in the northern hemisphere by inventors who were trying to make models of the sun's movement in the sky. 机械钟表是由北半球的发明家发明的，他们当时是想为太阳在天空的运行制造一个模型。
- These early mechanical clocks worked by using a lever that pivoted and meshed with a toothed wheel at certain intervals. 这些早期的机械钟表的工作，通过使用杠杆，心点和啮合与齿轮，在某些时间间隔。
- I didn't wake up until I heard the alarm clock. 直到听到闹钟的铃声我才醒来。
- That clock is a family heirloom. 那个座钟是祖传下来的。
- Unearthed relics show that the sundial was used before the Han Dynasty (206 BC - AD 220). It had been popular until mechanical clocks were introduced to China. 从出土文物来看，汉以前已使用日晷，在机械钟表传人中国之前，日晷一直是通常使用的计时器。
- I set it by the clock on the railway station. 我是按火车站的大钟对的。
- The clock ticks louder and louder in a quiet room. 钟的滴答声在静静的房间里变得越来越响。
- The grandfather clock was back in its old place. 落地式大摆钟已放回原处了。
- The little clock tinkled out the hours. 那只小钟叮叮当当地报时。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
