constant pressure complementary air device
constant pressure complementary air device
恒压补气装置
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Roots draft fan air capacity is calculated and the property curve is drew, and control principle of constant pressure complementary air device is discussed.
计算出罗茨风机的风量并绘制出风机的性能曲线；论述了恒压补气装置的控制原理。
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