heuristic principle

A ovel switchbox router, DDCR, is described in this paper. Based on the heuristic principle, it features a dynamic routing density and constraint graph to complete the ordering of nets as well as the selection of routing segment.

本文介绍一种新的四边通道布线器（DDCR），该布线器基于启发式原则提出，并应用动态布线密度和约束图完成线网定序和连线段选择。

On the basis of the study, we followed the following principles in the course of chemistry teaching: direct against principle, heuristic principle, challenge principle, administrative levels principle, nature exploring principle and opening principle.

在已有的研究基础上，我们在化学教学中创设问题情境时遵循了以下原则：针对性原则、启发性原则、挑战性原则、层次性原则、探索性原则和开放性原则。