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Explosives and Explosive Ordnance Disposal
containing
掌
|
all forms
Chinese
English
掌
子面
地下工程或采矿工程中的开挖工作面。又称隧道掘进工作面、隧道开挖的岩石表面、隧道工作面、隧道端掘进的工作面
tunnel face
掌
握被爆破物的形状、尺寸、材质、强度、配筋情况、爆破要求
design procedure of water pressure blasting
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