state-transition matrix

In use of spheroidizing agency treatment, some spheroidal graphites and carbide on the matrix of lamellar or sorbitic pearlite can be achieved in as-cast state.

其基本特点是通过对钢水的球化处理使材料在铸态下得到一定量的球状石墨和碳化物，基体组织为片状珠光体或索氏体。

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Equivalence between polynomial matrix description and state space description of linear time invariant systems

线性时不变系统两种描述的等价性

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Adaptive algorithm for state-transition matrix in precise time step integration method

精细时程积分中状态转换矩阵的自适应算法

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In this paper, the approximate perturbation range of the state matrix of a linear time-invariant system is given, keeping the system controllability invariant.

本文给出了线性定常系统状态矩阵摄动时保持能控性不变的摄动区间的估计。

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The prevalent formula for nonzero perturbation matrix in the secular equation is gained by the perturbation theory in degenerate state and property of spherical harmonics function.

本文应用简并态微扰理论和球谐函数的性质，得到久期方程中非零微扰矩阵元普遍表达式。

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First, the state transfer matrix of relative motion was introduced and the expression of relative motion with constant thrust control was educed.

首先给出相对运动状态转移矩阵，并推导出常推力控制情况下相对运动状态递推的解析表达式；

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