短語詞組短語rock blasting explosive 巖石炸葯safety blasting explosive 安全炸葯blasting explosive density 爆炸密實度high -power blasting explosive column 高威力爆破葯柱explosive blasting type 型爆破用炸葯explosive blasting type e 型爆破炸葯chamber explosive package blasting 洞室葯包爆破 返回 blasting explosive