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Watchmaking
containing
十
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English
在机械钟表传入中国之前,漏壶是我国使用最普遍的一种计时器。二
十
五、眼镜
Before the mechanical clock was imported into China, the clepsydra was the most widely used time-measuring device
(Glasses)
这个问题直到
十
八世纪发明了航海精密计时钟才得以解决
The problem was not solved completely until the invention of the marine chronometer in the eighteenth century
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