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坡顶线 pōdǐngxiàn
expl. brow; bench crest
tech. bench edge
坡顶线曾称坡肩。台阶上部平盘与坡面的交线 pōdǐngxiàn
expl. belt edge; belt crest
坡 顶 线: 6 phrases in 3 subjects
Architecture1
Explosives and Explosive Ordnance Disposal2
Technology3