双头螺杆泵比单头螺杆泵工作腔室多，泄漏少，泵的排量大，效率高。
The twin screw pump is of the properties of less leakage, big displacement and effectivity.
单头双螺杆泵与双头双螺杆泵密封腔的密封原理相同。
The sealing principle of sealing cavity in single thread twin screw pump is the same as that in double thread twin screw pump.
单级或双级泵是通过橡胶膜片上下往复运动，引导气流通过泵头，形成真空状态。
One-stage or two-stage pumps feature up and down movement of flexible diaphragm during the mechanical stage which induces a flow of gas through the pump head, generating a vacuum.
可配多个灌装头，常用的型号有：单泵机、双泵机和四泵机。
Responding to more filling, can match in sizes: single pump, double pump and four pump.
可配多个灌装头，常用的型号有：单泵机、双泵机和四泵机。
Responding to more filling, can match in sizes: single pump, double pump and four pump.
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