Screw type rotors have high volume efficiency.

螺杆转子具有较高的工作效率。

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The technical project adopted in present invention can help control remaining gap of the air cylinder as little as possible to improve volume efficiency.

采用本发明的技术方案，可以将气缸的余隙尽可能控制得小，以提高容积效率。

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Also the manufacturing precision of water hydraulic gear pump, especially gear surface and side flank, is required in order to improve its volume efficiency.

需要进一步提高水压齿轮泵加工精度，特别是侧板以及齿轮端面的平面度、表面粗糙度以提高水压齿轮泵的性能。

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Comparisons of text hotline volume and efficiency are hard to come by.

NPR: Crisis Hotlines Turning To Text To Reach Teens

The issue is that insurance favors rewards based on visit volume not efficiency or positive experiences leading to overcrowded waiting rooms, rushed patients and stressed doctors.

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This is meant to improve sound quality and maximum volume, while optimising power efficiency and protecting the driver.

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