1) negative variance
负向变异
2) directional change of the load
负载变向
1.
And a new concept of the directional change of the load has been proposed.
提出负载变向的概念,并详细阐述了回程空转和负载变向由于侧隙的存在如何影响系统的精度,提出传动过程中侧隙没有累加效应的结论。
3) Radial variation
径向变异
1.
Totally 26 provenance stands of 17-year-old Pinus koraiensis were selected for investigating genetic variation in different provenances and the trend of radial variation of wood quality in the direction of cone to tree bark.
对帽儿山地区 1 7年生 2 6个红松种源试验林进行了材质性状研究 ,主要包括材质性状在不同种源间遗传变异情况以及从髓心到树皮径向变异模式研究。
2.
8% radial variation of the growth ring width were resulted by climate change from April of the previous year to September of the same year.
应用响应函数分析方法研究了东北地区人工林红松生长轮宽度对月平均气温等气候因素变化的响应,结果表明:前一年4月到当年9月的气候变化对人工林红松生长轮宽度径向变异可产生40。
4) Directed mutation
定向变异
1.
In order to overcome the problems in resolving large scale 0-1 knapsack problem with genetic algorithm,this paper introduces the directed mutation into the genetic algorithm and presents an active-evolution-based genetic algorithm(AEBGA) for the 0-1 knapsack problem.
针对遗传算法求解大规模0-1背包问题中存在的不足,将定向变异机制引入到遗传算法中,提出了基于主动进化遗传算法的0-1背包问题求解算法。
2.
In order to solve the problem of low performance in genetic algorithm based fuzzy cluster method, this paper introduced the idea of directed mutation into the standard genetic algorithm presented a fuzzy cluster technique based on active evolution based genetic algorithm,and apply this new technique on the problem of fuzzy cluster.
为解决基于遗传算法的模糊聚类方法所存在的执行效率低的问题 ,将定向变异的思想引入到标准遗传算法领域 ,提出了一种基于主动进化遗传算法的模糊聚类技术 ,并将该技术应用到模糊聚类问题上 。
3.
In this paper we introduce the idea of directed mutation into the standard genetic algorithm field and present an active evolution based genetic algorithm based on the new research achievements in the genetics and biology evolutionism fields.
根据当前遗传学和生物进化论中对变异方式的研究成果 ,将定向变异的思想引入到标准遗传算法领域 ,提出了一种基于主动进化的遗传算法 。
5) axial variation pattern
轴向变异
1.
normal tree in Chang Lingang forest farm in country Jianshi are measured, and their axial variation patterns are analyzed.
62,在轴向变异不明显且相对较稳定;体积全干干缩率随轴向部位变化而差异显著,且主要存在于基部与近梢部之间。
6) Zonal displacement
纬向变异
补充资料：负负
1.犹言惭愧﹑惭愧;对不起﹑对不起。
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