Even if the faults have happened to the plant or an unknown input appears at the plant input, up to a centain limit, the performance of the overall system will not be degraded.

当此类系统出现故障或其输入端出现未知扰动时，该系统的性能指标也不会下降。

The relationship between subject and object in the teaching process of cadres educatioon exhibites centain dynamic behavior because of the difference in the teaching and the form of teaching.

在讲授式教学中，教学过程主客体关系较为符合传统的“双主体说”