名词
中文翻译：投影坐标系
同义词：
['projective coordinate system', 'projection coordinate system']
例句：
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1. The projective coordinate system is used to calculate the distance between two points on a plane.
投影坐标系用于计算平面上两点之间的距离。
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2. In this projective coordinate system, the x-axis represents the horizontal direction, and the y-axis represents the vertical direction.
在这个投影坐标系中，x轴表示水平方向，y轴表示垂直方向。
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3. The projective coordinate system is widely used in computer graphics and engineering design.
投影坐标系在计算机图形学和工程设计中被广泛应用。