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。
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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