The aerosol sample was extracted by ultrasonic technique and 16 of the PAH's were determined, in priority, as proposed by EPA, by GC-MS with selected-ion monitoring (SIM).
超声波抽提气溶胶样品，用GC - MS的选择离子监测(SIM)方式测定EPA提出的优先监测的16种多环芳烃的含量。
By researching cored samples, 9 logging parameters reflecting distinctly lithology are selected by cross plot technique, and build up lithologic sample set.
首先依据岩心取样进行岩性归类，然后通过交会图技术确定了9个对岩性反映较明显的参数，并建立起研究区域的岩性样本集。
By researching cored samples, 9 logging parameters reflecting distinctly lithology are selected by cross plot technique, and build up lithologic sample set.
首先依据岩心取样进行岩性归类，然后通过交会图技术确定了9个对岩性反映较明显的参数，并建立起研究区域的岩性样本集。
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