- angle mirror
- prism square
- prismatic square
- 直角: right angle
- 镜: looking glass; mirror
- 直角镜,立方镜: prism square
- 角镜: angle mirror
- 直角: [数学] right angle◇直角尺 square; try square; bare l-square; 直角棱镜 [光学] right-angle prism; corner cube prism; rectangular prism; 直角三角形 right angled triangle; right triangle
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