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3相交流電波形及奇次諧波
Author:
歐鎮寬
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等的四邊形
四邊形的特性
三位數除以一位數（一）
找出對稱軸
Discover Resources
球差曲线
test
Trigonometric Identities
练习及小结
如何平移逼近三点的抛物线
Discover Topics
Special Points
Rhombus
Sine
Planes
Dilation