它还必须是抗冲击的，这就是为什么没有旋转介质存在的原因。
It must also be shock resistant, which is why no spinning media exists.
研究者发现，针炙针的旋转破坏了一些组织，从而导致腺苷酸(一种已知的抗发炎介质)的释放。
The researchers found that rotation of the acupuncture needles damaged tissue, which caused a release of adenosine, a known anti-inflammatory mediator.
当被输送介质的粘度大于100厘泊时，可选用容积式旋转活塞泵。
When the viscosity of the medium being transferred is higher than 100cp, volumetric rotating piston pumps can be used.
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