老頂垮落 的英文怎麼說

中文拼音 [lǎodǐngkuǎ]
老頂垮落 英文
main roof caving
  • : i 形容詞1 (年歲大) aged; 活到老 學到老。 you will never cease to learn as long as you live ; li...
  • : i 名詞(人體或物體的最上部) crown; peak; top Ⅱ動詞1 (用頭支承) carry on the head 2 (從下面拱...
  • : 動詞1. (倒塌; 坍下來) collapse; fall; tumble [break] down 2. (人的精神和身體衰退) break down; crack up
  • : 落名詞[方言] (北方對蓮花落的俗稱) a kind of folk song
  1. Probe into methane geological law in anlin coal mine

    工作面初次機理的探討
  2. Analysis of the way for the main roof caving relating to the staggered sublevel caving method

    錯層位放煤方法老頂垮落方式分析
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