three pads三支撑掌threenum.三n.三；三个adj.三个的three-level laser material三能级激光器材料,三能级激光材料Three layer PE anticorrosion三层PE防腐three element tagging system三元标签系统three-dimensional zerotree三维零树Three dimensional wound core立体卷铁心three-quarter veneer crown[医] 四分之三罩冠three-shift workday system三班制three hundred and twenty two(=322) 三百二十二three thousand and forty one(=3041) 三千零四十一three-dimensional continua三维连续统