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炮孔直径
expl. diameter of blasthole (or borehole)
炮孔直径通过炮孔圆心,并且两端都在圆周上的直线段,单位为 m 或mm
expl. borehole diameter; diameter of blasthole or borehole
炮孔直径
: 14 phrases in 1 subject
Explosives and Explosive Ordnance Disposal14