可动臂式的刮板以对数螺旋线轨迹集泥，连续性好、集泥效率高。
Movable arm scraper collects sludge using track of log spiral, so it has characteristics of good continuity and high efficiency of sludge collection.
介绍了对数螺旋线的相关知识，及其在自然界中尤其是在水利工程中的运用。
Logarithmic spiral line has been used more and more in practice, this paper give a general introduction of logarithmic spiral line.
最后采用曲线拟合的方法进行对数螺旋线拟合，拟合出曲线后，与标准零件进行比较分析。
Finally adopts the method of curve fitting to do the logarithmic spiral fitting, and then do a comparative analysis with the standard components after fitting the curve.
绿色螺旋线由内部每一个正方形和四分之一圆相切线构成，而红色的螺旋线是黄金螺旋线，它是对数螺旋线的一种特殊类型。
The green spiral is made from quarter-circles tangent to the interior of each square, while the red spiral is a Golden spiral, a special type of logarithmic spiral.
绿色螺旋线由内部每一个正方形和四分之一圆相切线构成，而红色的螺旋线是黄金螺旋线，它是对数螺旋线的一种特殊类型。
The green spiral is made from quarter-circles tangent to the interior of each square, while the red spiral is a Golden spiral, a special type of logarithmic spiral.
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