It also allows you to trace different types of requirements to each other and view those relationships in amatrix.
它还允许您追踪不同类型的需求，并且在矩阵中观察那些关系。
2
This paper studies relation between the linear function and the matrixtrace, and obtains a number of necessary and sufficient the condition that a linear function is traceofmatrix.
讨论线性函数与矩阵的迹的关系，给出了一个线性函数是矩阵的迹的若干充要条件。
3
A flow injection on-line coprecipitation system has been coupled with an atomic absorption spectrometric system for the determination oftrace calcium in bulk of cobalt and nickel matrix.