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单词
mining shield
释义
mining shield
mining shield
[
′mīn·iŋ ‚shēld
]
(mining engineering)
A canopy or cover for the protection of workers and machines at the face of a mechanized coal heading.
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bp-va
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bpw
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bpwc
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bpwg
bpwi
bpwj
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更新时间:2026/10/2 13:39:20