With the bridge, our invariant was that the bridge would always be parented off of a point in server state space and would be the one operation needed to transform incoming server operations.

架设桥梁时候，我们的不变地方是桥梁始终以服务器状态空间中某点为父节点，并且是用来转换引入的服务器操作需要的这样一个操作。

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This variation has infinite solution. It is only applicable in the invariant state of ventilation network structure and parameters.

这种变换存在着解的无穷性，并且仅适用于通风网路的结构和参数不变的状态。

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This paper discusses time-domain method of designing observers for linear functions of the state vector of the continuous, linear, time-invariant, MIMO systems.

本文讨论为连续线性时不变多输入多输出系统设计多线性函数观测器的时域方法。

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