sinking mill

冶金专业英语词汇(S) ... sink hole 缩孔 sinking mill 减径机 sinking sizing mill 减径 定径机 ...

直角三角形_馆档网 ... "基金法,递增法"," sinking fund method" "渐缩辊轧机"," sinking mill" "浸水泵"," sinking pump" ...