Then listed some possible methods which enhance the movement frequency of a ready-made pneumatic cylinder used in the practice, and put forward the concept for most effective methods.

由此列出了提高用于实践中现成气缸的运动频率的一些可能方法，并提出了最有效方法的概念。

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The trick is to tune the crystal, by modifying the details of pattern, so that as much of the emitted energy as possible is at the frequency most efficiently captured by indium gallium arsenide.

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