In order to achieving a designed throwing distance or special shape of pile in practical chamber blasting, the plane charges were, sometimes, adopted.
在硐室爆破工程实践中，为了达到设计的抛掷距离和特定的抛体堆积形态，往往设计布置平面药包。
In order to achieving a designed throwing distance or special shape of pile in practical chamber blasting, the plane charges were, sometimes, adopted.
在硐室爆破工程实践中，为了达到设计的抛掷距离和特定的抛体堆积形态，往往设计布置平面药包。
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