Firstly, the construction of ELV system is was analyzed and content of workflow modeling is was introduced.
首先对弱电信息系统的组成进行了分析，并介绍了工作流的建模内容；
I have certain electrical building professional knowledge, be familiar with building automation, building elv.
我有一定的建筑电气专业知识，熟悉楼宇自动化、建筑弱电。
Good knowledge and practical skills in AC/AV/Elec. /ELV/Plumbing/Kitchen equipment/painting/decorating/carpenter.
在强电/空调/弱电/机管/厨房设备/油漆/装饰/木工方面拥有良好的理论及实践技巧。
Finally, taking ELV engine as example, an application research about the optimized remanufacturing reverse logistics network model is carried out.
最后，以汽车发动机为例，对所建再制造逆向物流网络稳健优化模型进行了实际案例应用研究。
Besides, several key problems about how to operate green take-back system of ELV are pointed out, such as take-back network, take-back model, performance evaluation, etc.
并指出了报废汽车绿色回收系统研究需要解决的几个关键技术，如回收网络、回收模式和绩效评价等。
Responsible for the maintenance of the ELV, telephone systems, fire alarm, monitoring system. To assist the operation and maintenance work of the audio and video installation.
负责弱电、电话系统、消防报警、监控系统等的维护和保养工作，同时协助处理音响及视频的安装、操作、维修及保养工作。
Elv maintenance groups: responsible for the elv work, including fire alarm system, broadcasting system, emergency lighting system, monitoring systems, access control, conference room av system, etc.
弱电维修组：负责全厂弱电工作，包括火灾报警系统，广播系统，应急照明系统，监控系统，门禁系统，会议室影音系统等。
Elv maintenance groups: responsible for the elv work, including fire alarm system, broadcasting system, emergency lighting system, monitoring systems, access control, conference room av system, etc.
弱电维修组：负责全厂弱电工作，包括火灾报警系统，广播系统，应急照明系统，监控系统，门禁系统，会议室影音系统等。
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