短語詞組短語Bore and rod area ratios 汽缸內(nèi)徑和連桿截面比dual -bore drill rod [地質(zhì)]雙孔鉆桿;雙孔鉆桿Structure of bore rod 鉆桿結(jié)構(gòu)rod bore 桿式鉆absorber rod bore 吸收棒內(nèi)孔control rod bore 控制棒內(nèi)孔control -rod bore 控制棒內(nèi)孔connecting rod bore 連桿孔connecting rod bearing bore 連桿軸承孔rod bearing bore 連桿軸承孔 返回 bore rod