在计量泵的吸入端可能有气体泄漏。

At end inhalation metering pump to a gas leak may have.

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螺丝位置在计量泵的背面。

Screw position at the back of the metering pump.

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首先，采用理论与实验相结合的方法对计量泵进行了进一步的研究。

First, the way combined with method and experiment were used to study the metric pump.

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首先，采用理论与实验相结合的方法对计量泵进行了进一步的研究。

First, the way combined with method and experiment were used to study the metric pump.

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