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凹面鏡的成像(理想)
Author:
joeyliaw.tw
GeoGebra
New Resources
活动三:应用性质
中华人民共和国国旗
龙形曲线-分形龙2
撒针估算面积实验
折扣
Discover Resources
科博館的水畢氏三角
testing
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
projection02 by Mr LO WY
同餘
Discover Topics
Angles
Straight Lines
Centroid or Barycenter
Logarithmic Functions
Prism