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geometric parameters of a blasting crater
expl.
爆破漏斗构成要素
爆破漏斗构成要素有:最小抵抗线 W, 爆破漏斗半径爆破作用半径 r;爆破漏斗深度 D, 爆破漏斗的可见深度 h, 爆破漏斗张开角 θ 等
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