Screw position at the back of the metering pump.
螺丝位置在计量泵的背面。
Aiming at this situation, a new type of metering pump is designed.
针对这一情况，进行了新型泵的设计研究。
If you happen to change the metering system, a pump can react immediately.
如果计量系统发生改变，泵可以立即发生反应。
If you happen to change the metering system, a pump can react immediately.
如果计量系统发生改变，泵可以立即发生反应。
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