Contrasting old and new reagents test proved that using new reagent can largely reduce reagent cost and get better ore dressing indexes.

新旧药剂组方的对比试验表明：使用新组方可较大幅度降低选矿药剂成本，且获得比较好的选别指标。

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Small amounts of reagents and a fluid sample from a patient are guided through its tiny channels to test for STDs.

少量的试剂和流体样本病人被引导穿过它的细小通道测试性传播疾病。

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Objective: to investigate the interference of serum magnesium test results related to reagents and solutions.

目的探讨干扰血清镁测试结果的相关试剂及解决方法。

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Just one square inch, the chip contains 2, 056 microvalves that can selectively mix reagents together (in this case to test for the activity of a particular enzyme in a bacterium) in 256 reaction chambers, each one holding less than one-billionth of a liter of fluorescent dye.

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