piπrad弧度弧长等于半径的弧,其所对的圆心角为 1 弧度.
guess the grade | 第三期-宣统三年大清银币壹圆
ssc (a) 来得乾净. 图来自 bio-rad3.
01f;const float grad_step=0.01f;const float clip_far=10.
silnika% 1g 7 5102-0ee 77 -4tv1un = 280; %vwn = 1640*pi/30; %rad
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