而且对特殊样品经常得不到较好的检测结果，甚至根本不可能检测。
It needs to regulate about fifty buttons for different measurement models, usually, it doesn't get a satisfactory result for some special samples, even it can't measure them.
用等离子质谱(ICP - MS)分析一些特殊样品的时候，前处理方法成为分析样品成功与否的关键，对于高基质含量的样品测量其微量元素含量更是如此。
Using Inductively Compled Plasma Mass Spectrometry (ICP-MS), the pretreatment method of some special samples is a key, especially to analyzing trace elements of samples contained high background.
用一些特殊的专孔方法从洞里挖掘岩石来提取样品。
Cores- samples of extracted rock from the holes using some special method of drilling.
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