短語詞組短語Tool bit chucking shank 發(fā)明名稱bit t shank 釬尾shank bit 直柄鉆頭square shank bit 方頭鉆嘴round shank bit 掘進(jìn)機(jī)截齒westbank square shank bit 方頭鉆嘴straight shank bit 直柄鉆頭straight drill straight shank bit 直柄鉆頭straight shank twist bit 直柄麻花鉆頭 返回 bit shank