短语词组短语cold ring -rolling mandrel 冷轧芯辊ring -rolling 环轧制ring parts rolling 环件轧制ED -Ring-rolling 电火花摆碾ring rolling machine [机]扩孔机;辗环机;圆壳滚轧机ring rolling mill 轮箍轧机;环件轧机;轧环机seamless ring rolling [机]无缝环轧制 返回 ring rolling