planking and strutting 中文意思是什麼
planking and strutting
解釋
板架支撐-
Excavations and trenches - slopes, planking and strutting, breadths of working spaces
坑道和溝渠.工作空間的坡度鋪板和支承柱寬度 -
Planking and strutting
板架支撐
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