短語詞組短語rock blasting explosive 巖石炸藥safety blasting explosive 安全炸藥blasting explosive density 爆炸密實度high -power blasting explosive column 高威力爆破藥柱explosive blasting type 型爆破用炸藥explosive blasting type e 型爆破炸藥chamber explosive package blasting 洞室藥包爆破 返回 blasting explosive