当一个主应力迹线通过一个各向同性点时，该符号会发生一个表面上的或虚假的改变。
An apparent or pseudo change in the sign occurs when a stress trajectory passes through an isotropic point.
利用对应原理和FFT技术计算出了无限均匀各向同性介质中双力偶点源产生的位移场，并结合若干实例进行了分析和总结。
According to the correspondence principle and FFT, the author have calculated the displacement field of a double-couple point source in homogeneous, isotropic, unbounded medium.
基于四角切圆燃烧锅炉炉内湍流流动各向同性的假设，得出炉内各点的特征频率。
On the basis of a hypothesis that the turbulent flow in a tangentially fired boiler furnace assumes an isotropic character obtained is the eigenfrequency of various points within the furnace.
以环氧树脂为基体，间苯二胺和氨基二苯甲烷的低融点混合物为固化剂，铜粉为导电填料，制备了热固化各向同性导电胶。
Copper conductive adhesives were prepared using epoxy as matrix, the mixture ofm-phenylenediamine and diaminodiphenylmethane as hardener, and copper particles as the con-ducting filler.
点力源在均匀横向各向同性介质中激发的弹性波可以用透射-反射矩阵法进行求解。
Elastic waves from a point force in transversely isotropic, homogeneous media can be solved through the reflectivity-transmittivity matrix approach.
以环氧树脂为基体，间苯二胺和二氨基二苯甲烷的低融点混合物为固化剂，铜粉为导电填料，制备了热固化各向同性导电胶。
Copper conductive adhesives were prepared using epoxy as matrix, the mixture ofm-phenylenediamine and diaminodiphenylmethane as hardener, and copper particles as the conducting filler.
以环氧树脂为基体，间苯二胺和二氨基二苯甲烷的低融点混合物为固化剂，铜粉为导电填料，制备了热固化各向同性导电胶。
Copper conductive adhesives were prepared using epoxy as matrix, the mixture ofm-phenylenediamine and diaminodiphenylmethane as hardener, and copper particles as the conducting filler.
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