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行進波
Author:
ipc Wang
y=sin(3x-2t)
GeoGebra
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画直线等分三角形的面积
第八周作业
兩位數除以一位數(二)
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
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齿轮咬合
極座標與圓進階版
Tangent from an external point
基础知识
高中物理·质谱仪
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Centroid or Barycenter
Trigonometric Functions
Trapezoid
Angles
Matrices