Collapses in Mengshan area are caused by the weightless rock mass falling down rapidly due to the interaction of gravity and weathering factor of freeze-and-thaw action and raining action in the locate of the developing joints.是什么意思_Collapses in Mengshan area are caused by the weightless rock mass falling down rapidly due to the interaction of gravity and weathering factor of freeze-and-thaw action and raining action in the locate of the developing joints.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句