The insulation pipe-drilling stem string and its using method are introduced.
介绍了保温管、测试管串的结构以及使用方法。
Objective To determine the technical function of Iodinator and study its using method.
目的测定碘释放器的技术性能,研究其使用方法。
Cleaning oil and gas well, pipeline, sleeve, stratum and equipment composition and its using method.
清洗油和气井,管道,套管,地层和设备的组合物及其使用方法。
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