sitai 中文意思是什麼
sitai
解釋
西泰-
Roof supporting of thick coal drift in sitai mine
四臺礦厚煤層綜采順槽及切眼頂板支護問題探討 -
Research on development law of karst collapse column in datong sitai mine
大同四臺井田巖溶陷落柱發育規律的研究 -
Coal mining technology for seam under above goaf with very short distance in sitai mine
四臺礦極近距離煤層采空區下開采技術
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