With the development of industry , standard parts more and more are used in the design of mechanical product . for the sake of avoiding repeated labor , people bring forward the advice to make a java standard library and have created some java standard libraries 这些年，随着工业的发展，在机械产品设计中对标准件的使用也越来越多，人们为了避免重复的劳动，纷纷提出和建立了各种形式的三维机械标准件库。
The soil salification is a serious problem for agriculture and environment . especially now with the development of industry , the situation of soil salification becomes more and more serious , and the quality of water is continuous worsened . research on the mechanism of salt tolerance especially in the important crops , such as wheat , is becoming more urgent than ever before 土壤盐渍化是影响农业生产和生态环境的严重问题，随着工业污染加剧，灌溉用水的质量不断下降和化肥使用不当等原因，次生盐碱化土壤面积有不断加剧的趋势，给农业生产造成重大损失；黄矮病毒病是小麦等禾本科植物的重要病害之一，其传毒介体蚜虫更使植物产量损失巨大。
With the development of industry , the request of temperature process control is higher , control request basically include control precision , response velocity , system stability and adaptation ability . this paper will research the control system of rapidly changed temperature , and the points are temperature response velocity and control precision , from the results of experiment , the effect of control is relatively perfect 随着工业生产的发展，对温度的过程控制要求在不断提高，其控制要求主要表现在控制精度、响应速度、系统稳定性以及适应能力等方面，本文就是对要求温度快速变化的控制系统进行了研究，主要在温度响应速度和控制精度方面做了一些努力，从最后的实验结果来看，得到的控制效果还是比较理想的。
With the development of industry and agriculture . the requirement for reliable running of power equipment is more and more necessary . therefore , in the areas where high realiablility and safety are required , controlling , monitoring , and follow - up managing power equipment are more and more important , the same with ship power station . in order to realize the realible control and safe operation and maintenance of ship power station , and enhance the automation degree of un manned engine room , the thesis has designed a novel distributed ship power automation system ( network monitoring and management system ) which can increase the reliability and economic effect , using advanced industrial control technology , computer technology and network programming technology 随着工农业的发展，电力系统可靠性的要求越来越重要，因此在许多可靠性和安全性要求比较高的领域，电力设备的控制、监视和管理的重要性显得越来越突出，对于船舶电站也是如此。为了实现船舶电站可靠的运行、控制和管理，提高无人机舱的自动化程度，本论文设计了一套分布式船舶电站控制系统，用先进的工业控制技术和计算机网络编程技术提高系统的可靠性和经济性。
