Through comparison testing of the surface of reflowing holes of the external-mix self-sucking pump, the best design is determined.
对外混式自吸泵的回流孔面积进行对比试验，确定最佳设计方案。
Analytical procedures used to Draft — Not for Implementation characterize a reference standard should not rely solely on comparison testing to a previously designated reference standard.
用于标准品界定的分析方法不应仅仅是和先前的指定标准品进行比较实验。
Analytical procedures used to Draft — Not for Implementation characterize a reference standard should not rely solely on comparison testing to a previously designated reference standard.
用于标准品界定的分析方法不应仅仅是和先前的指定标准品进行比较实验。
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