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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计量史学方法等，从不同的角度对医学史进行研究。

Its research medical history by standing different point of view.

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计量史学方法等，从不同的角度对医学史进行研究。

Its research medical history by standing different point of view.

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