1) circuit section
线路截面
1.
This article has made a probe into the circuit section.
针对小康住宅电气设计中线路截面、需要系数、配电型式、保护方式、电视、电话、保安对讲等作了初步探讨。
2) chopping circuit
截断线路
3) Section curve
截面线
1.
Application of section curve expanding method in one step forming;
截面线展开法在一步成形中的应用
2.
After that,the original scattered data points were turned into the regular forms with layer structure by constructing point cloud slicing in 3-directions and creating section curve of each point cloud slicing.
通过对点云最小包围盒进行均匀分割及分割后点云的密度分析,对密度过大的分割块进行迭代分割,建立了3个方向的点云切片和截面线。
4) section line
截面线
1.
Application of section line modification method in blank design;
截面线修正法在毛坯设计中的应用
2.
This article proposes one kind of method of section line to reconstruct curve surface of variable intake manifold.
文中提出一种基于截面线的方法重构可变式进气歧管曲面,用截平面数据点拟合一组截面线,在截面线的基础上进行蒙面操作,进而构造出符合点云外形的曲面。
5) method of curves of cross sections
截面线法
1.
The method of curves of cross sections is one of the important and popularly applied ways in generation of tool path in NC machining.
截面线法是数控加工中重要的也是应用较为广泛的一种刀具轨迹的生成方法。
6) conductor section
导线截面
1.
In DC transmission line construction design,current national standard of economical current density will under predictcd conductor section,resulting in large loss.
在直流输电线路工程设计中,如果按我国现行标准规定的经济电流密度选择导线截面,将导致截面偏小,损耗增大。
2.
In this paper,the mechanism and characteristics of conductor skin effect with nonlinear loads were deeply analyzed;the impact of skin effect on conductor section selection were studied;the existing problems of conductor section selection were indicated;the new methods and conclusions of conductor section selection with nonlinear loads were presented.
本文深入分析了非线性条件下导线集肤效应产生的机理及其特性,研究了集肤效应对导线截面选取的影响,指出了目前导线截面选取存在的问题,得出了非线性负载条件下导线截面选取新的方法和结论。
3.
Based on design of the first 750 kV line in high altitude area of China as well the overseas requirements of conductor selection and electromagnetic environment, the laws of effect of conductor section and split mode on the electromagnetic environment, mechanical features and project economy of various conductor used in 750 kV single line are introduced.
结合我国第一条高海拔750kV线路的设计,以及国内外导线选型及电磁环境要求,介绍了导线截面及分裂形式对750kV单回线路各种导线的电磁环境、电气特性、机械特性和工程经济性等方面影响的规律,综合考虑技术性和经济性,推荐了750kV输变电示范工程官亭—兰州东线路工程的导线方案。
补充资料：输电线路导线截面选择
输电线路导线截面选择
selection of conductor cross-section of transmission line
但由于超高压输电线路导线的表面电场强度均控制在电晕临界电场强度的80%以上，接近于电晕临界电场强度，而新架设导线表面的局部污损又导致导线电晕临界电压降低，故运行初期和在雨天情况下仍难免出现电晕。相导线上产生电晕放电时，要伴随着产生连续重复性的电流脉冲，这些电流脉冲产生频率为0.15~100 MHz的振荡电磁波，致使在电晕导线上产生高频电磁辐射，从而在导线周围形成一高频电场，对无线电收音机和发射天线产生干扰。同时这种振荡电磁波还沿导线传播，干扰高频通道的正常工作. 由电晕导线产生的无线电干扰电平L-20 19(EZ/E，)，dB。其中EZ为测点电场强度，拌V/m;E，为参考电场强度，拌V/m。工程上取E，一1拌V/m为基准，故L~20 lgEZ。若EZ~El~1拜V/m，则测点的无线电干扰电平为零。 从高压、超高压架空输电线路下测得的无线电干扰电平L(dB)随频率f(MH:)的增大而减弱，其关系曲线称为频谱特性，如图2所示。由频谱特性看出，频率在0.15~1.0 MH:范围内的干扰电平最大;雨天的干扰电平是各种气候中最大的。另外，随着海拔高度的增大，相对空气密度减小，干扰电平也增大。
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