Another problem with Hg is loss during sample preparation.
汞还有另外一个问题，就是在制样时候的损失。
Finally, the best method was determined in sample preparation.
最终确定最佳样品制备的方法。
In this article a method of sample preparation of metal powder is introduced.
介绍了一种金属粉末样品的金相制样方法。
The choice of gold ore sample preparation flow will directly influence the assay quality.
金矿样品加工制备流程的选择会直接影响化验分析质量。
The choice of gold ore sample preparation flow will directly influence the assay quality.
金矿样品加工制备流程的选择会直接影响化验分析质量。
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