难检字字典在线查询

汉语拼音：huán yù

1.指北斗的界域。

1. 指北斗的界域。

   《穀梁传·文公十四年》：“秋七月，有星孛入于北斗。孛之为言，犹茀也。其曰：‘入北斗，斗有环域也。’” 范宁 注：“据孛于大辰及东方皆不言入，此言入者，明斗有规郭，入其魁中也。”《汉书·五行志下之下》：“ 刘歆 以为北斗有环域，四星入其中也。”

• The Approximations of Explosive Solutions of Semilinear Elliptic Problems on an Annulus

  环域上半线性椭圆型问题爆炸解的逼近

• without constructing poincare cycle domains , the positions of the limit cycles are pointed out accurately

  在不构造poincare环域的情况下，较为精确地指出了极限环的存在位置

• Existence of Positive Radial Solutions for Some Semilinear Elliptic Equations in Annulus

  某些半线性椭圆方程在环域上的正对径解的存在性

• Multiplicity of Positive Radial Solutions for Some Quasilinear Elliptic Equations in Annular Domains

  环域上一类拟线性椭圆方程正的径向解的多重性

• Oriented Manufacturing Algorithm Research on Sectional Curve-edged Ring Field's Raster Filling

  面向制造的截面曲边环域光栅填充算法研究

• Improved Successive Extension Field Method Based on Genetic Algorithms

  基于遗传算法的改进逐次扩展环域法

• The Authentication System of E-Government Affairs Based on the Structure of Group, Ring and Field

  用群、环、域的结构模式构筑分级电子政务认证体系

• On How to Identify the Analytic Ring Field of Functions

  如何确定函数的解析环域