Of a rotary vane vacuum pump, or a liquid ring vacuum pump.
其前级泵可用滑阀泵或旋片泵 、 水环泵、油环泵等真空泵.
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XZ Rotary - vane Vacuum Pump is a double - stage high speed direct coupled rotary - vane Vacuum pump.
2XZ型旋片式真空泵系双级高速直联旋片式真空泵.
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It is proposed that working conditions rotary vane compressors with reasonable discharge valve have better performance.
排气阀结构本文认为合理配置排气阀结构的旋叶式压缩机具有较好的变工况能力.
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