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- This paper deals with the design, research and application of a kind of new technique on the big hole perforation in oil well and forming fissure in oil layer. 论述了一种大孔径射孔造逢新技术的设计、研究及应用,该技术特别适用于稠油常规开采。
- Keywords liner;big hole perforator;EFP(explosive-formed-penetrator) theory;shaped-jet; 粉末罩;大孔径射孔弹;爆炸成形侵彻体理论;聚能射流;
- He knocked a big hole in the wall. 他把墙撞出了一个大洞。
- The hospital bills made a big hole in her savings. 住院费花去了她一大笔存款。
- The hospital bill make a big hole in his savings. 医疗费已用掉了他一大笔存款。
- The hospital bills made a big hole in his savings. 医疗费已用掉了他一大笔存款。
- big hole perforator 大孔眼穿孔器
- The Big Hole Perforation Forming Fissure Technique and Application 大孔径射孔造缝技术及应用
- It was so dark Bob fell head over heels into a big hole in the ground. 天太黑,鲍勃一个跟斗跌到了一个大洞里。
- It was so dark Jack fell head over heels into a big hole in the ground. 天太黑,杰克倒栽葱地摔进一个大坑里。
- The prisoners had tunnelled a big hole in the wall. 囚犯们已经在墙上凿了一个大洞。
- We can mend a seam but not a big hole. 我们可以缝好脱线处,但不是补大洞。
- There was a big hole and he fell in. 那有个大洞,他掉进去了。
- There was a big hole in the middle of the street. 街道中央有个大洞。
- The hospital bill makes a big hole in his savings. 医疗费已用掉了他一大笔存款。
- There is a big hole in the state of Arizona. 在亚利桑那州有一个巨大的坑穴,
- School fees can make a big hole in your savings. 学费可以花掉一大笔的储蓄。
- There was a big hole in the ship. 船上有个大洞。
- His head broke off and a big hole was left there. 他的头被打破了,头顶上出了个大洞。
- The bomb left a big hole in the ground. 炸弹在地上炸出一个大洞。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries