规格（长 宽）mm精度等级0123平面度公差( m)200 20051020.5 200 3005.51122 300 3005.51122 300 40061224 400 4006.512.525 400 5006.5132666500 5006.8142868400 60071427.570500 600714.228.571500 800815.53178600 80081632801000 75091836901000 1000102040971000 12001020.5411031000 15001122451121000 2000 26521301500 2000 28561402000 2000 31611532000 2500 34671681500 3000 35701742000 3000 37741842000 4000 4488219检验平板（检验平台）在机械制造中的用途：