A、結(jié)晶 B、再結(jié)晶 C、回復(fù)
下圖中游標卡尺的精度值是()mm,實際測量值是()mm
A、0.2,45.7 B、0.1,45.7 C、0.2,54.5 D.0.1,45.70
A、0.4mm B、40mm C、4mm