The paper deals with the microstructrures and hight-temperatrure hardness of highchromium white cast iron with the austenitic and sorbitic matrices.

本文主要论述了以奥氏体及索氏体为基体高铬口铁组织和高温硬度。

The tripeptide Arginyl-Glycyl-Aspartic acid (RGD) is a common cell recognition site of many adhesive proteins contained in extracellular matrices and in the blood .

RGD三肽（精氨酰-甘氨酰-天冬氨酸）序列是细胞外基质及血许多粘附蛋共有细胞点。

The necessary and sufficient conditions of similarity of two idempotent matrices are proved, the idempotency of linear combinations of two idempotent matrices is discussed.

摘要证明了数域上两个同阶幂等阵相似充要条件是它们有相同秩；给出了幂等阵相似标准型；讨论了两个幂等阵线性组合仍是幂等阵充要条件。

In the practical applications of highly nonnormal matrices, these theorems may be more useful than their generalized eigenvalue special cases and may provide more descriptive information.

在对高度非正规矩阵研究应用，这些定理将比它们特例-广义特征值定理更可靠，能提供更多信息。

One kind of inverse eigenvalue problems, whose solutions are required to be normal or diagonalizable matrices, is investigated in quaternionic quantum mechanics.

摘要本文研究了四元数量子力学一类要求其解是正规或可对角化四元数矩阵特征值反问题。