D. 1 μm : 1 cm = 10 mm 1 cm2 = 1 cm x 1 cm = 10 mm x 10 mm = 100 mm = 10 m 1 Mm = 106 m 0.1 um X 5 Mm = ( 0.1 x 10-6m ) ( 5 x 106 m ) = 0.5 x 100 m2 = 0.5 ...
確定！ 回上一頁
