According to system demands, it is chosen and designed for hardware and software of the control system, and SIMATIC S7-300 programmable controller of SIEMENS Corporation is chosen.
根据系统要求，分别对控制系统的硬件和软件两个方面进行选择和设计，选用西门子公司的SIMATIC S7- 300可编程控制器。
From the viewpoint of the system demands, realistic demand and the policy demand, it's very necessary for Beijing to establish the policy agricultural insurance catastrophe risk preventive mechanism.
无论是从制度要求、现实需求还是从政策需求来看，北京市建立政策性农业保险巨灾风险防范机制都是十分必要的。
From the viewpoint of the system demands, realistic demand and the policy demand, it's very necessary for Beijing to establish the policy agricultural insurance catastrophe risk preventive mechanism.
无论是从制度要求、现实需求还是从政策需求来看，北京市建立政策性农业保险巨灾风险防范机制都是十分必要的。
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