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1)  phase-to-phase fundamental current variation comparison method
相间工频变化量比较法
2)  fundamental component mutation between phases
相间工频变化量
3)  relatively surveyor
相对比较测量法
1.
By fundamentals analysis of linearity surveyor of domestic and international and relatively surveyor, design deep-hole linearity surveying system based on relatively surveyor, and study structure and software of that system, for linearity examination have certainly actual significance in deep-hole machining.
在分析国内外直线度测量方法和相对比较测量法原理的基础上,设计出了基于相对比较测量法的深孔直线度测量系统,对于解决深孔零件加工中的直线度检测具有实际意义。
4)  residual current comparison
残流变化量比较
5)  comparative expansion factor
比较膨化相关法
1.
Sixteen factors, which closely correlated with meteorological yield ratio of longan were selected from productive statistics and analysis of meteorological information in Licheng District(former Quanzhou City), main longan production areas of Fujian Province in 32 years (1961-1992) by the comparative expansion factor and stepwise regression method.
采用比较膨化相关法及逐步回归对福建龙眼主产地的鲤城区(原泉州市)32a(1961-1992年)的生产统计及气象资料进行分析,筛选出16个与龙眼气象产率关系密切的气象因子,并结合10a滑动相关分析对各因子与龙眼产量的关系进行分析讨论。
6)  power frequency variation
工频变化量
1.
Application of the power frequency variation principle in single source and short distance transmission line;
工频变化量原理在单电源系统中的应用
2.
The paper discusses the advantage and the disadvantage of the microcomputer distance protection device based on the power frequency variation principle which will be applied in the background of 110kV short distance transmission line with single source.
论述了在 1 1 0kV单侧电源短距离重要输电线路这一特殊应用背景下 ,微机距离保护装置采用工频变化量距离保护原理的优越性和不足之处。
3.
According the special application background of the single source and the short line in the 110kV power system , the author proposed a feasible protective scheme ,in which the power frequency variation distance protect theory with combination to the four- lateral distance relay is used as quick and mainly theory.
本人针对110KV单电源短线路这一特殊应用背景,提出了以工频变化量距离保护为快速主保护,结合四边形三段式相间和接地距离保护的保护原理方案。
补充资料:工频突变量方向比较式纵联保护


工频突变量方向比较式纵联保护
direction comparison pilot protection system using sudden change of power frequency component

  gongPIntub一an}一ong fongx一angb一]loosh一Zongl一an boohu工颇突变t方向比较式纵联保护(d ireetioneomParison pilot protection system using suddeneharge of power fr阅ueney eomponent)见方向比校式纵联保护。
  
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