1) logarithm spiral array
对数螺旋阵
1.
Direction of arrival estimation based on logarithm spiral array
基于对数螺旋阵的波达方向估计
2) Logarithmic spiral
对数螺旋线
1.
Gearing theory and tooth area’s formation of logarithmic spiral bevel gear(Ⅰ);
对数螺旋线齿锥齿轮齿面的形成及传动原理(Ⅰ)
2.
Logarithmic spiral arch dam has three adjustble factors, so that it can easily meet requirements of stress and sta-bility, and can also meet that of Yanjinqiap dam under the conditions of that the dam cushion and abutment havebeen excavated and built, therefore, the scheme using logarithmic spiral shape was adopted in the design because ofits full advantage.
对数螺旋线拱坝，因其有三个可调整的因素，更能满足应力和稳定的要求，尤其更能满足盐津桥水库大坝已浇筑的垫座和已开挖的坝肩，充分显示其优越性而被采用。
3.
On this basis,it also discusses the efficiency of scraping mud by using the straight line board and the logarithmic spiral board on thickener.
分析了浓缩机(或刮泥机)刮泥板的角度与刮泥效率的关系,并以此为基础对浓缩机直线刮泥板与对数螺旋线刮泥板的刮泥效率进行了探讨,对于浓缩机刮泥板的设计有实际意义。
3) logarithmic spiral line
对数螺旋线
1.
Logarithmic spiral line has been used more and more in practice,this paper give a general introduction of logarithmic spiral line.
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。
4) log spiral
对数螺旋线
1.
Analyzing crystal can be divided into plane analyzing crystal and bent analyzing crystal by shape,the bent analyzing crystal can be divided into Lorentz circle and log spiral crystal and etc.
分光晶体按其几何外形分为平晶和弯晶,其中弯晶又分为洛仑兹圆形和对数螺旋线型弯晶等。
5) logarithm helical curve
对数螺旋线
1.
Abstract This paper introduced how to set up the parametric expression of concrete-mixer truck drum logarithm helical curve in the spherical reference frame, and figure out the screw pitch expression by the drum s design parameter.
通过在球面坐标系中推导搅拌运输车搅拌筒对数螺旋线的参数化方程,并用拌筒的设计参数表达螺距方程。
2.
This paper introduced setting up the parametric expressions, and how to creating the helical curve and unwrapping the curve on the plane based on UG by the parametric unwrap equation of concrete-mixer drum logarithm helical curve.
推导出搅拌运输车搅拌筒对数螺旋线平面展开方程,用UG的参数表达式来实现螺旋线和在平面上展开曲线的生成。
6) logarithmic spiral sliding surface
对数螺旋滑动面
1.
The result shows that both analysis results are close,and adopting logarithmic spiral sliding surface for variational analysis is more practical.
分析研究了变分法在尾矿坝稳定性分析中的应用,利用研究开发的尾矿坝二维变分分析程序对不同工况的尾矿坝进行了稳定性分析,并与极限平衡分析法进行对比,结果表明:分析结果比较接近,采用对数螺旋滑动面进行变分分析更合乎实际。
补充资料：螺旋线
又称“柱面螺旋线”。一种空间曲线。其特征是曲线上每一点的切线与固定直线(轴)交定角。当动点在一圆柱面上以等角速度作转动，同时又以常速沿轴向作匀速直线运动时的轨迹。有右旋和左旋之分。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条