社会需要一种更可靠的时间测量仪器，它就是机械钟。

Society needed a more dependable instrument of time measurement and found it in the mechanical clock.

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本文介绍了一种自制的时间测量仪，利用此仪器改进了密立根油滴实验的时间测量方法并对测量结果和方法进行了比较。

A self - made instrument for measuring time is introduced. The method of measuring time in Milton oil experiment is improved and the result is compared with the method.

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作业环境对于工人来说正在变得越来越危险，这意味着修复冷却系统以及挂接重要的测量仪器将花费更长的时间。

And conditions for workers are getting more dangerous, which means that fixing up the cooling systems and hooking up vital measuring instruments takes longer.

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