A.1~2mm B.2~3mm C.3~4mm D.4~6mm E.6~8mm
A.2~4mm B.4~6mm C.6~8mm D.8~10mm E.10mm以上
A.大于50℃ B.大于60℃ C.大于70℃ D.大于80℃ E.大于90℃