请输入您要查询的字词:
单词
矿山钻井法
释义
矿山钻井法
Encyclopedia
工学
特殊凿井法
释
shaft boring
矿山钻井法
用钻井机钻凿竖井井筒的特殊凿井法。在地面采用大直径钻井机向地层钻进竖井,以洗井液护壁并排渣,悬浮下沉预制井壁作为永久支护,实现人员不下井的机械化凿井方法。
随便看
De Moivre-Laplace integral limit theorem
De Moivre-Laplace theorem
de Moivre number
de Moivre quintic equation
de Moivre's law
de Moivre theorem
demolition and construction ratio
demolition blasting
demolition blasting of bridge
demolition blasting of buildings
demolition blasting of chimney
demolition blasting of cofferdam
demolition blasting of cooling tower
demolition blasting of supporting beam in foundation ditch
demolition blasting of water tower
demolition unit
demolization
Demon
Demonax crater
Demon Book Case
Demons
Demon Star
demonstrability
demonstrable
demonstration
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/1/4 13:29:53