Based on the results, a normal matrix design approach for spacecraft attitude control systems is developed by using a feedback perturbation description for system uncertainties.
基于正规性分析结果，使用系统不确定性反馈摄动描述对姿态控制系统的正规矩阵设计方法进行研究。
Based on the normality nature, the normal matrix design approach for spacecraft attitude control is developed.
利用这一特性，提出一种适用于航天器姿态控制的正规矩阵设计方法。
Objective To approach the expression of matrix metalloproteinase (MMP) -9 and its significance in breast carcinoma and corresponding non-tumor normal tissues.
目的探讨基质金属蛋白酶- 9 (MMP - 9)在乳腺癌及癌旁正常组织中的表达及意义。
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