镀镍厚度等于1密耳是多少um？1mil=多少mm 1 mil 1/1000英寸0.0254 mm. 1 mil 1/1000英寸0.00254 cm 0.0254 mm 25.4 um 1英寸1000 mil 2.54 cm 25.4 mm 1 mm 39.37 mil百度百...