According to amplitude analysis of the measurement signal, the probability DE sign method of finding the spring stiffness of the tractor's hydraulic draft control system is stud ied.
以实测信号为依据，通过幅值域分析，探讨了拖拉机液压系统力调节弹簧刚度的概率设计方法。
Using the PLC module made by Simons as a control core, S7-200 made by Simons is designed in remote gate control system, the draft of its composing and its system software program are put forward.
利用西门子公司的PLC模块作为控制核心，对西门子S7-200在远程闸门控制系统中的应用进行了设计。给出了闸门控制系统硬件构成和系统软件编程框图。
Through logical estimate, budget, control and communication of expenditure, the thesis strives to draft finance management system suitable to the institution.
通过对费用合理的估算、预算、控制、沟通，力求制定出适合本单位的项目财务管理体系。
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