Perfo Frac is a new technique which combines perforation with high energy gas fracturing to improve near wellbore zone.
复合射孔是射孔和高能气体压裂相结合对近井地层进行改造的一项新技术。
The technique of high precision trace neutron transmutation doping of detector grade high resistance zone-refined Si mono-crystal is introduced.
主要介绍探测器级特高阻区熔硅单晶的高精度微量中子嬗变掺杂技术。
Finished product oil transportation technology design feature and piping construction technique in high-frigid zone from germu to Lasa are analysed.
分析了格拉（格尔木—拉萨）成品油管道输送工艺设计特点和适合高寒地区管道敷设施工技术的应用；
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