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坡度标 pōdùbiāo
railw. grade post
tech. grade indicator; grade post (桩); gradient indicator; gradient post (桩); gradient sign; slope sign
坡度标 pōdùbiāo
eng.geol. grade post
坡度标: 11 phrases in 3 subjects
Bridge construction1
Explosives and Explosive Ordnance Disposal2
Technology8