the trace of matrix的用法和樣例：
例句
- Strike is the trace of the intersection of an obliquely inclined plane with a horizontal reference plane.
走向是傾斜平面與水平參考成交線的跡線。 - We prove sime equivalence between the trace and the eigenvalue of the product of two matrices, then extend them to the case of the sum of two matrices.
摘要本文給出了兩個矩陣積的跡與特徵值之間的若干等價關係，並推廣到兩回事個矩陣和的情形。
