学科：生物学 词目：根迹 英文：root trace 释文：从茎产生出来的不定根，其维管束是从茎分出来的，称为根迹。这种根通常起源于维管束鞘，穿过皮层和表皮而出现的。从茎转向叶的维管束分枝（叶迹）构成叶隙，它对茎维管束系统有很大影响，相反而根迹对茎的维管束系统却没有多大的影响。
本文分析了现有离散控制系统设计方法的某些不足之处；提出了一种不必画根迹的根迹法校正的设想；
The paper first analyses some defects of existing design procedures, and then puts forward an idea of Root-Locus Method Correction which removes the need to draw root-locus diagrams.
过去的7个月里，69岁的瑞根先生每周两次在萨克拉曼多附近的大学城开车向北，在人行道上仔细找寻动物被车撞死的蛛丝马迹。
Nearly every week for the last seven months, Mr. Ringen, 69, has driven the roads north of this college town near Sacramento, scanning the pavement for telltale bits of fur and feathers.
实例分析和计算表明，利用该方法所得的结果比根轧迹方法简单、准确。
Analysis and calculation of a practical example show that the results is correct, and is simpler and more accurate with the method developed in this paper than that with root-locus method.
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