cpk计算公式excel:请求高人帮忙翻译

On-the-spot bus talk first ,
foreword freely It was just recent years that the on-the-spot bus showed up prominently on the controlled field, but its oncoming force is welled up fiercely, and there is trend of growing in intensity . Then, what is an on-the-spot bus on earth? What is a control system of an on-the-spot bus ? On-the-spot bus control system is compared with accuse of collecting and distributing control system (DCS ) that circle occupy an leading position still where characteristic and advantage does it have in worker at present? Before bus standard has not been unified yet at the scene, can adopt? If want to adopt, more than 40 kinds of on-the-spot buses, which one should be selected for use?
This text will launch describing around the above question , will probe into the origin cause of formation of the on-the-spot bus in terms of development course of the control system; Explain the concept , system structure and characteristic of the on-the-spot bus give current situation of the development of the field bus ; Put forward the countermeasure that should be adopted of current situation of letting a hundred schools contend in the face of the on-the-spot bus ; It proves the bus develops and adopts the method live to combine the concrete instance.