英语词汇“roof-fall exploitation (caving) hard coal mining”的中英文释义、用法、翻译及短语词组-英汉翻译词典

单词	roof-fall exploitation (caving) hard coal mining
释义	roof-fall exploitation (caving) hard coal mining 翻译顶塌开采（塌陷）硬煤开采
随便看	Nana-Mambr, Prefct.de Nanami nanampere Na Nan nanana na na na na boo boo na-na na-na boo-boo na na na na na na na-na na-na na-na nananas nanander nanandrium nanandrous Nanango Nananib Plat. Nananne Nananu-i-Ra I. nanao nanaomycin Nanaomycin A nanaomycin B nanaomycin C nanaomycins Nanaonycin B Nanaonycin C

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