分析设备

In order to develop new types of explosion relieve valve s,a new experimental plant for explosion relief valve of diesel engine was developed,which was controlled by data acquisition system.

阐述为研制新型柴油机防爆阀，开展防爆阀防爆功能试验研究，开发的一套由计算机数据采集系统控制的防爆阀爆炸试验装置，论述试验装置的功能、原理和设备，重点介绍装置运行控制系统和数据采集分析系统。

Moreover, second-winding current waveform of a current transformer is calculated under the transient current of the typical short-circuit fault by numerical method. The analysis shows that the relevant protection equipment may refuse to trip when the fault current is extra high. It will result in the maloperation of protective relays for loss of their selectivity, and cause other protective relays to operate beyond range, and extend the scope of shutdown of power supply.

在这些回路出口处发生相间直接短路等严重故障时，流过相应TA一次侧的故障电流可能达到TA额定工作电流的100倍以上，大大超过了保护用TA的10%误差容许倍数，将使TA严重饱和，从而影响相关的保护设备的动作性能，因此有必要对在这种特大电流作用下的TA的传变特性做一些探讨，以分析其对继电保护装置动作特性的影响及应采取的措施。

Results It was found that occupational injury had significant relationship with age, sex, education, employment pattern, technology, workplace, work changing, wage, family income, enterprise scale, enterprise proprietorship, protective device, operation Rules, and training rules of work safety.

结果 单因素分析结果有显著性的变量为年龄、性别、文化程度、就业类型、技术等级、就业地点、工作变换、月均工资、家庭年收入、企业规模、企业性质、安全防护设备、安全操作规程和安全教育制度。

Results Univariable analysis showed that occupational injuries had significant relationship with age,sex,education,employment pattern,technology,workplace,work changing,wage,family income,enterprise scale,enterprise proprietorship,projective device,operation rules,and training rules of work safety.

结果 单因素分析结果有显著性意义的变量为年龄、性别、文化程度、就业类型、技术等级、就业地点、工作变换、月均工资、家庭年收入、企业规模、企业性质、安全防护设备、安全操作规程和安全教育制度。

Virtual Prototyping Technology in the field of engineering machinery can be applied: the crawler and wheeled vehicle stability, performance studies, hydraulic system, traction equipment performance prediction, bulldozers, excavators, forestry machinery, such as dynamic performance studies, spare parts and Engine load prediction and size determined, the driver field of vision research, prediction excavator needed to power, the efficiency of research, the reliability analysis.

虚拟样机技术在工程机械领域可应用的方面有：履带式和轮式车辆稳定性、操作性能研究，液压系统、牵引设备性能预测，推土机、挖掘机、林业机械等动态性能研究，零部件和发动机载荷预测与尺寸确定，驾驶员视野研究，预测挖掘机所需要的功率，工作效率研究，可靠性分析等。

Combined system simulation with optimal control, selected a typical water cooled primary/secondary chilled water system, used the research achievements of Annex 30 in IEA for the reference, this work firstly presents both the basic component models and the control system component models. Secondly gives the main models for parameter identification and experiment validation. Finally a dynamic digital simulator is set up using TRNSYS as the platform to substitute a real system to test and evaluate some kinds of online optimal supervisory control strategies after giving some essential data file input and finishing all the PID controllers'tuning.

本文将空调系统的仿真模拟与优化控制相结合，首先选择比较典型的水冷式二级泵集中空调系统，在国际能源组织IEA第30子课题Annex 30多年研究成果的基础上，建立了系统各设备的部件模型和控制系统部件模型，对主要模型参数的辨识方法进行分析，同时对其准确性给予验证；在此基础上，建立了以TRNSYS为仿真平台的集中空调水系统数字仿真器；通过必备数据文件的输入和对所有下位机控制回路PID参数的调试，最终完成可用于评估各种上位机优化控制方案的空调水系统数字仿真器。

Section 1 discusses the advantages of medical film printer and USB, and put forward one elementary design scheme of the system. The principle of laser printer and the holistic design scheme of system are presented detailedly in Section 2, while Section 3 expounds the technology of USB. Section 4 discusses design scheme of transfer system of the laser printer - includes the development of USB device and CPLD. The test of holistic laser printer and effect picture of medical image are presented in Section5. In the end, a review of this system and some bugs are put forwards at present.

本文主要分为六个部分，第一部分讨论了医用胶片打印机和USB总线技术的特点和发展趋势，并提出了系统的初步设计方案和研究意义；第二部分描述了医用激光胶片打印机的背景、工作原理和系统的各个组成部分；第三部分描述了通用串行总线2.0版(USB2.0)的通信原理；第四部分详细介绍了打印机数据传输系统的设计——包括USB设备的开发和CPLD的硬件和软件设计，并对这个传输系统的性能进行了分析；第五部分介绍了整个打印机的测试结果和实际打印医学影像的效果图；最后对本文做出总结并提出了不足之处和参考价值。

Using the a hand-hold GPS and wireless transmitting unit to rapidly locate the fire and determine the rate of fire spread, which also offered an indispensable way of verifying the speed of forest fire appealing. Discussing the representation and Computing Method of the simulate calculation error based on the thorough investigation of the sources of simulate calculation error. Pointing out that the speed and directional error are the root of forest fire appealing simulates error. Thus increasing the parameter of error correction is an effect way of reducing systematicsimulationerrors.

4提出了一种利用手持GPS和无线传输设备来快速测定火场位置和林火实际蔓延速度的方法，为林火蔓延模拟速度验证提供了必要的手段；对林火蔓延模拟误差的来源进行了全面分析，探讨了林火蔓延误差的表现形式和计算方法，指出了林火蔓延速度误差和蔓延方向误差是林火蔓延误差产生的根源，提出了通过增加系统误差修正参数来减少系统模拟误差的有效方法。

This paper analyzes relationship among the design of plastic products, raw material constitution and fluid channel design of extrusion die and elucidates the importance of their a-greements each other.

论述了塑料制品设计、原料配方、设备选用与口模流道设计间的关系，阐明了它们之间良好协调的重要性；并结合塑料熔体流变理论和实践经验，以180装饰壁板为例，分析讨论了此类异型材口模流道设计的思路和方法

Based on these technologies, we design the project of device management-control system inChongQing Natural Gas Purify Plant.

打破了以前控制系统形成的&信息孤岛&，把设备运行实时数据上传到管理系统中，实现数据的深层次挖掘和分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。