On this same tack, you could take the barometer to the top of the building, attach a long rope to it, lower it to just above the street, and then swing it as a pendulum.

根据同样方法，将气压计带到屋顶，拴上一个长绳，直垂地面，像钟摆一样摆动。

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This paper briefly introduces the structure and principle of a new system of self-excited oscillations, which is a magnetic pendulum with swing-controlled switch.

本文将对一种新的自激振动系统，即带有摆控开关的磁力摆的结构、原理及实验结果作一扼要的介绍和讨论。

youdao

This paper briefly introduces the structure and principle of a new system of self-excited oscillations, which is a magnetic pendulum with swing-controlled switch.

本文将对一种新的自激振动系统，即带有摆控开关的磁力摆的结构、原理及实验结果作一扼要的介绍和讨论。

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