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willyng wrote: 熟悉relation的朋友能否解释一下作图过程中涉及的几个公式啊?是否要用几何表示才能讲得清楚? sd5=3*cos(trajpar*360*5) sd17=12*360*trajpar+30 sd5=4.5*cos(trajpar*360*5) sd12=20+15*trajpar*360 谢谢!
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