经济效益

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分：第一，根据船舶辅锅炉的工作特点，设计PLC在船舶辅锅炉自动控制系统中的应用方案，主要有PLC选型及输入输出点的设计，画出系统控制梯形图并分析工作原理；第二，根据交流三速变极调速起货机的工作要求，确定采用PLC控制的方法，进行控制系统的硬件设计和软件设计，并分析工作原理：第三，设计了PLC在三相异步电动机控制中的应用，给出了控制梯形图、程序及输入、输出接线图；第四，研究了用PLC实现船舶组合起动屏自动控制的方法，进行了系统的电源设计和软件设计，给出系统工作流程图；第五，探讨了船舶机舱监视系统应用PLC的可行性，将继电器报警线路改为用PLC控制报警，给出系统硬件图和软件梯形图，并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析，可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术，而且前者比后者更可靠、更小巧，维护保养更方便的结论，从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

But the companies to enjoy the economic benefits of information systems Timor, but also faces enormous risks.

但是企业在享受着信息系统帝来的经济效益的同时，也面临着巨大的风险。

On the basis of describing the patent technology of using titanium white waste acid to produce industrial grade magnesium sulfate, the market prospect of magnesium sulfate was analyzed.

在简述钛白废酸生产工业级硫酸镁专利技术的基础上，对硫酸镁的市场进行了分析，说明此专利技术既可解决钛白粉厂的环保问题，又有良好的经济效益。

It can adjust the soil, air and hot , which is benefit for the grow of plants and tomato can ripe early and has good quantity.

膜下滴灌能改变农田生态环境，使番茄病毒危害减轻，是增产，增值的防止病害的有效途径，其经济效益显著。

And have produced the considerable economic effect from this. Our country tour collects artificial more than 160,000,000,000 yuan in 1994 , jumps over eighth in living in top-ten the whole world tour destinations.

并由此产生了可观的经济效益。1994年我国旅游收人为1600多亿元，跃居全球十大旅游目的地中的第八位。

The classification of land registration system is the registration of deed and registration of title, which includes the Torrens system.

土地登记制度最通常的分类就是权利登记制和契约登记制，法律上讲，两者最基本的区别就是"契约登记制关注法律事实的登记，而权利登记制关注事实的法律后果的登记"；土地登记并非一个单纯的私法或公法行为，而是具有双重性质的，即土地登记兼具私法行为与公法行为的双重性质；土地登记制度不仅有平等主体的私权关系，而且有纵向的行政关系，其中贯穿着个人目标与国家目标的双重价值；土地登记的效力包括：决定权利变动、权利正确性推定、善意保护、监督管理和警示效力；一个完整统一的土地登记制度是富有效益的，包括个人效益、公共管理效益、社会效益和经济效益。

This trend brings huge economic benefit to supply the fast,full-scale development of track and field sports with material security.

现代田径运动发展呈商业化的趋势，由其产生的巨大经济效益为田径运动的快速全面发展提供了物质保障。

Frequency trembler grid lamp could control fruit tree pest with low use cost and input,reduce the use of chemical pesticides,alleviate environment pollution and protect ecological balance,which had obvious economic,ecological and social benefits.

使用该灯成本低、投入少，可防治果树害虫，减少化学农药用量，减轻环境污染，保护生态平衡，具有明显的经济效益、生态效益和社会效益。

The economic efficiency estimate was carried on to this production model and the results indicated that " triticale + silage com" two crops one year can make net profit of 12765 Yuan/hm^2 /year.

对该生产模式进行经济效益估算，结果表明，"小黑麦＋青贮玉米"一年两作年纯利润为12765元／hm^2，比一年一作玉米生产增收1500元／hm^2，是山西北部农区值得推广的生产模式。

In order to make abroad companies to order our products trustfully, we pasted the Quality Management System certification ISO9001:2000 in Sep. 2006, and got CE certification at the same time, improve the quality and economic benefit simultaneously and realize double-win sales platform.

为了让海内外商家更有信心的订购我们的产品，在产品质量方面：公司的产品于2006年9月通过了ISO9001：2000质量管理体系认证，同时也取得 CE 认证，实行产品质量与经济效益同步发展，实现"双赢"的销售平台。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。