roadway below 中文意思是什麼
roadway below
解釋
橋梁下承行車道-
The center tramway portion depresses below the roadway elevation.
中間電車道落低到車行道以下。 -
Bolt and truss supporting technology of combined roof in the below coal roadway of near coal seams
近距離煤層下層煤巷復合頂板錨桿與桁架支護技術
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