短語詞組短語drill l jumbo 大型多鉆頭鉆機hydro -drill jumbo 液壓鉆車feed drill jumbo 長進(jìn)給鉆車crawler mounted drill jumbo 履帶式鑿巖臺車rotary y drill jumbo 回轉(zhuǎn)式鉆車rotary drill jumbo 回轉(zhuǎn)式鉆車;旋轉(zhuǎn)式鉆車 返回 drill jumbo