On the other hand, not only has the practical function of the door, mark the features, but also showed a strict rating system and become a culture of Confucian ceremony symbolic representation.
另一方面，它不仅具有纪念功能、实用功能，同时也表现出了严格的社会等级制度，是儒家礼制文化的一个表征符号。
The symbolic function in the variable structure control is replaced by the saturation function to reduce the chattering which is brought by the variable structure control system.
同时对变结构控制律中包含的符号函数项，采取了用饱和函数来代替的方法以尽可能地抑制变结构系统所带来的抖振。
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