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单词
jet drilling
释义
jet drilling
jet drilling
[
¦jet ¦dril·iŋ
]
(mechanical engineering)
A drilling method that utilizes a chopping bit, with a water jet run on a string of hollow drill rods, to chop through soils and wash the cuttings to the surface. Also known as wash boring.
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更新时间:2024/11/13 21:10:46