风量调节阀系阻性部件，存在较大的压头损失，须消耗大量送风能量。

The valve is an impeding part with larger pressure head loss and a lot of discharge energy consumed.

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风量调节阀系阻性部件，存在较大的压头损失，须消耗大量送风能量。

The valve is an impeding part with larger pressure head loss and a lot of discharge energy consumed.

youdao