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to phrases
breaker props
tech.
破碎机的支撑柱
;
放顶密集支柱
breaker prop
expl.
放顶柱
用垮落法时,在工作面与采空区交界线上专为放顶而安设的特种支柱
0
breaker props
:
1 phrase
in 1 subject
Technology
1
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