A.5mmB.10mmC.15mmD.20mm
A.粗平±150mm、細平±100mmB.粗平±100mm、極細平±30mmC.細平±50mm、極細平±30mmD.細平±150mm、極細平±50mm
A.0.05~0.10mm/aB.0.12~0.20mm/aC.0.25~0.40mm/aD.0.20~0.50mm/a