短語詞組短語Tool bit chucking shank 發(fā)明名稱bit t shank 釺尾shank bit 直柄鑽頭square shank bit 方頭鑽嘴round shank bit 掘進機截齒westbank square shank bit 方頭鑽嘴straight shank bit 直柄鑽頭straight drill straight shank bit 直柄鑽頭straight shank twist bit 直柄麻花鑽頭 返回 bit shank