短語(yǔ)詞組短語(yǔ)directional collapse blasting 定向坍塌directional fracturing blasting 定向斷裂爆破borehole directional fracture blasting 巖石定向斷裂爆破directional controlled blasting 定向控制爆破directional pinpoint blasting 定向拋擲爆破directional throw blasting 定向爆破;定向拋擲爆破directional breaking blasting 定向斷裂爆破directional demolition blasting 定向爆破拆除directional breaking blasting technology 定向斷裂爆破技術(shù) 返回 directional blasting