在应用直接法和摄动法进行灵敏度分析时，使振动方程与灵敏度方程具有相同的固有特性而产生长期项。

The natural characteristics are the same for vibration and sensitivity equations when direct method and perturbation method are used for sensitivity analysis.

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同时，在大量工艺试验研究的基础上，得到了大量的工艺效果并研制出了各种振动切削装备，逐步使振动切削技术走向实用化。

A lot of excellent effects have been investigated, and multiform vibration cutting equipments have been developed, so that the practical vibration cutting technology has been applied gradually.

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通过感觉玻璃，他发现可以抑制玻璃的振动但是无法使它停止下来。

Feeling the glass, he discovered that he could dampen the vibration but couldn't make it stop.

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