针对医学影像放射专业的实验教学问题，介绍了本实验室自己研制的数字式计时秒表，对它的设计思想、原理、结构等进行了详细论述，分析比较了该仪表的性能特点。

This paper introduces the digital stopwatch designed by our lab for teaching and experiment of medical imaging specialty. Its design idea, principle and configuration are discussed in detail.

youdao

他开始用秒表为他们计时，于是他们变快了。

He started timing them with a stopwatch, and they got faster.

youdao

因为在一些比赛中，一旦秒表开始计时，比赛就必须在无人类引导和控制下进行。

Because in some of the events, once the stopwatch ticks off, the competition must go on without any human guidance or control.

youdao

suppose I asked you to time a 100 meter spring in the Olympics, but I give you a stopwatch that is measured in units of 15 seconds?

如果我要求你,在奥林匹克数给100米短跑计时，但我会给你一个秒表,它可以测出15秒的大小？

麻省理工公开课 - 固态化学导论课程节选