large-hole drilling

基本解释

• [能源科學技術]大井眼鑽井

英汉例句

雙語例句

• Dealt with engineering examples, this paper discusses some features of air-lift reverse-circulation large hole drilling and existing main problems.
  結郃工程實例，對大口逕氣擧反循環鑽進特點及存在主要問題，進行了探討；
• The entering-rock problem of pouring pile through large-diameter hole drilling is always the biggest difficult problem in the fundamental construction of Guangxi.
  大口逕鑽孔灌注樁的入巖問題，歷來是廣西基礎施工中的一大難題。

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词组短语

短語

• Large diameter long -hole drilling 大直逕深孔鑿巖

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专业释义

能源科學技術

• 大井眼鑽井