As the hypogyny concept of usufructuary right , every right must have the control power , excluding power and the character of limitation and derivation . the management right of state - owned enterprise is the ownership in essence , so it is unsuitable to be prescribed in property law . some kinds of property rights are not included in the scope the usufructuary right , because they are only the manner of acquiring properties and usually regulated by the public law 特别法上的物权从其内涵上来看，属于准物权的范畴，是取得物权的一种方式，尽管它们具有物权的部分特征，甚至具有一定的私法性质，但其更多地体现了公法所进行的管理及约束，倘若将其放入用益物权体系，必然造成体系上的不合理及繁琐。
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This paper introduces the development process of wastewater disposal , it ' s auto control system , the level of nowadays and several new techniques of china and foreign countries . the immanent structure , control rules , main features and design methods of auto control systems in wastewater disposal process are studied in this paper . aiming at four typical parameters , such as temperature , dissolved oxygen , ph and the planes of water , the distributed control system is designed , composed by pc called epigyny computer and scm 8098 called hypogyny computer , and some sensors , shift deliver utensils and related meet orifices of parameters gathering and figures communication 本文介绍了国内外污水处理及其自动控制系统的发展过程、当今水平和提高自动化程度的若干新技术；研究了污水处理自动控制系统的内在结构、控制规律、主要特点和设计方法；选取污水处理中的典型参数温度、溶解氧、 ph值和液位等为控制对象，设计了以个人计算机为上位机、以8098单片机为下位机，并辅之以传感器、变送器及相关接口单元所构成的二级集散控制系统( dcs ) ；介绍了几个主要程序模块的设计思路、工作过程，这些程序模块是：用高级语言visualbasic6 . 0开发的上位机人机交互界面程序、数据处理和图表输出程序，用执行效率高的汇编语言开发的下位机数据采集与系统监控程序、上位机与下位机之间的数据通信程序，汇编语言与vb之间的转接程序，等等。
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Monitor various data of electric power systems from various menus which designed by human - machine interface menu design system in real time , include the displaying of remote measure 、 remote communication 、 electric power # 118alues , remote control operating of the controlled objects , reading and writing the fixed # 118alues of the hypogyny equipment 在人机界面设计系统设计的各种画面上实时监控电力系统的各种数据量，包括遥测量、遥信量、电度量的显示，以及对控制对象的遥控操作和下位装置的定值读写。
