Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/f9ee75a621d46ebe3ccb36d463505b57.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 lead of helix例句_lead of helix英汉例句_lead of helix双解例句_甲百汇小鸡词典
In the form of function of functions this article derives the parametric equation of cylinder helix the lead of which is of a linear change. 用复合函数的形式，汇出导程呈线性变化的圆柱螺旋线的参考方程。