1um = 0.001mm
1um*1um = 0.001mm*0.001mm
1um^2 = 0.000001mm^2
是這樣嗎???
還是=1um^2 = 0.001mm^2 ??
2007-01-21 05:50:27 · 3 個解答 · 發問者 勇氣 2 in 科學 ➔ 數學
1 mm = 1000 μm
1 mm^2 = 1000000 μm^2
1μm = 0.001 mm
1μm^2 = 0.000001 mm^2
2007-01-21 15:42:54 補充：
μm = 微米
2007-01-21 10:41:23 · answer #1 · answered by 蛋寶寶 5 · 0⤊ 0⤋
1微米等於0.001毫米，
也就是千分之ㄧ倍咧，
1微米平方等於0.000001毫米平方，
也就是百萬分之ㄧ倍。
就是這樣啦!
2007-01-21 06:08:30 · answer #2 · answered by ? 5 · 0⤊ 0⤋
1um^2 = 0.000001mm^2是錯的
答案會是10^-12m不等於10^-18m
是1um^2 = 0.001mm^2
10^-12m=10^-12m
2007-01-21 05:57:59 · answer #3 · answered by 漢 2 · 0⤊ 0⤋