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波的干涉 Wave Interference
Author:
W.L. Wong, Albert
GeoGebra
New Resources
算柱 (兩位數)
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
四邉形 (四年級) 教師版
Discover Resources
angle0428
测试网页
Perimeter
拋物線1-焦點法
Copy of sin(x) 的函數圖形
Discover Topics
Cone
Scatter Plot
Step Functions
Sine
Tangent Line or Tangent