Exploration on Operation Life of Retarders and Its Period of Scrap
关于减速顶运营寿命及报废期的探讨
Design on operation program of seismic exploration on water of Weishan Lake Coal Field
微山湖煤田地震勘探水上施工程序设计
It is a new type of up jarring tool used in oilfield, geological exploration and drilling operation.
它是石油、地质勘探钻井工程中新型的向上震击工具。
Exploration of Treatment for Extrahepatic Portal Hypertension by a Distant Splenorenal Venous Shunt Operation
远端脾肾静脉分流手术治疗肝外型门脉高压的探讨
Most enviromental environmental groups suppose for the oppose further energy operation exploration in the Arctic.
大多数环境组织反对对北极洲能源的进一步勘探。
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