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

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。

youdao

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

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。

youdao