词汇	subtrace of matrix
释义	subtrace of matrix 矩阵的次迹
随便看	model of platform model of popular entertainment model of population dynamic projection model of population dynamics model of population prediction model of position determination model of power structure model of practice model of practice teaching model of preservation Model of principal-agent model of product family model of production increment Model of Projects management Model of Promotion model of propellant model of public administration model of public goods supply model of public relations model of purchase management model of pyretic syndrome model of qi asthenia model of qi-asthenia model of qi deficiency model of qi-deficiency