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单词
underhole
释义
underhole
underhole
[
′ən·dər‚hōl
]
(mining engineering)
To mine out a portion of the bottom of a seam, by pick or powder, thus leaving the top unsupported and ready to be blown down by shots, broken down by wedges, or mined with a pick or bar.
随便看
lac y
lacy
lacy appearance
lacyd
lacydonidae
lacy, luis de
lacyon
lacyp
lacypaa
lacy, petr
lacy, petr petrovich
lac z
lacz
lacépède, bernard germain étienne delaville
lacépède, bernard germain étienne de la ville, comte de
l&ad
lad
lad-1
lad1
lad2
lad3
lada
lada 21011
ladac
ladacan
英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
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更新时间:2026/8/16 11:50:16