一种双级滑阀真空泵，由气路管道和二级滑阀缸组成。
The utility model provides a double-stage slide valve vacuum pump, which consists of an air pipe and two slide valve cylinders.
对单级与双级抽气开平衡通道与不开平衡通道的真空泵的真空度进行了对比分析。
Comparison of vacuum is made between the single and double suction vacuum pump, between the unit with balance passage and that without balance passage.
单、双级旋片式真空泵。
单、双级旋片式真空泵。
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