A preliminary trial is carried out in 4 wells in Tarim oilfield.

这种堵漏剂具有一定的油溶性和酸溶性,堵漏效果好,对油层污染小.

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This system has been checked by preliminary trial testandthatsystem has basically reached design requirements.

本系统经过初步的试用考核,基本达到设计要求.

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Central to the forensic evidence presented at the depositions hearing, or preliminary trial, a DNA analysis.

在听证或初审时提供的主要的法庭证据是DNA分析.

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