pgb meaning in English
多 发些歌拿点钱
永久导向基盘
Examples
- Set the 30 " conductor head onto the pgb
把30 "导管头座到永久导向架里。 - Run the pgb and land in the tgb
将永久导向架下到临时基板上。 - If pre - drilling mode was taken in an offshore oil development , pgb - free well drilling technology might be adopted for supplementary wells when the pgb slots were totally occupied
摘要采用预钻井方式开发的海上油气田，对水下钻井基盘钻井槽孔用完后增钻的调整井，可采用无基盘钻井方式作业。 - Abstract : this paper briefly reviews the use of precision guided bomb ? pgb ? in morden conflicts , describes classification , characteristics and key technologies of pgb , predicts the development trends and gives four examples of new pgb , at the end proposes that the problem of how to intercept pgb must be emphasized
文摘:简要回顾了精确制导炸弹在现代局部战争中的使用情况,论述了精确制导炸弹的分类、特点和当前研制的重点技术、项目及发展趋势,最后警示对这种新的空中威胁必须引起防空界的高度重视。