Herein a general introduction of a Robot Nut Runner System in the process of engine assembly is given, which consists of work position distribution, fixture design, and its working theory.
A general method of reliability cost assessment in distributionsystem which is based on Semi-Markov process and aims at the uncertainty of failure duration distribution is presented.
针对配电系统故障时间分布不确定的特点，提出了基于半马尔柯夫过程的可靠性成本评估通用方法。
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GIS of urban water distributionsystem and analysis system under GIS environment are introduced, including its design thought general structure and key technology.