The paper introduces the design and research of network electric control system of hoist based on PROFIBUS field-bus, emphatically analyzes its software structure.
本文基于P ROFI BUS 现场总线，提出对提升机电控系统进行网络化的设计和研究，着重分析了系统软件结构。
Its main research concluded the following contents: the morphological and anatomical structure of Tilia amurensis exists differences as the hoist of latitude and elevation;
主要研究以下几点内容：紫椴的形态解剖结构是否随纬度、海拔的升高而存在差异；
Reinforce the combination of production, teaching and research, hoist the technology content of flowers and plants nursery stock industry;
加强产学研结合。提升花卉苗木产业的科技含量；
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