“shaft boring”的概念、定义、翻译、参考文献-科学参考

单词	shaft boring
释义	shaft boring 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	the mental health of middle age the mental health of old age the mental health of youth theme of drama theme park theme plaster theme post office theme publishing The Merchant of Venice The Merck Veterinary Manual，MVM the mercury clock of the Libros del Saber theme reading room The Meridian Encyclopedia of Zhou Surname The Meridian of War The mermaid The Merry Widow The Messingkauf Dialogues the MET the meta-communication theory of play the metaphor of chemical compounds The Metaphysical Poets The Metaphysics of Morals The Method the method of acquiring cryogenic the method of agreement

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