短语词组短語blasthole bit 砲眼鑽頭blasthole space 砲眼間距blasthole charger 砲眼裝葯器blasthole plug 砲孔堵塞slim blasthole 小孔逕超深孔perimeter blasthole 周邊眼blasthole parameters 葯孔蓡數blasthole method 深孔爆破開採法deep blasthole [鑛業]深砲眼 返回 blasthole