The fourth part elaborated Chinese and the Southeast Asia region economic cooperation restriction factor, the regulative mechanism, and proposes the related countermeasure.
第四部分论述了中国与东南亚经济合作的制约因素、调控机制，并提出相关对策。
A mathematical expression of the stable region of a regulative system composed of PID speed regulators and regulated sets is derived in this paper.
文中推导了调节对象(压力引水管道、水轮机、发电机及其所在电网)与PID调速器组成的调节系统稳定域数学表达式。
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