道路路基塑料排水板施工方法

本文通过案例介绍了某高速公路塑料排水板处理软土地基的材料施工工艺流程、操作要求进行了详细的阐述，并提出了质量控制和安全控制方法，可作为工程技术人员的参考资料。     

HXN5型机车连杆关键加工夹具的研制

介绍了HXN5型机车连杆重要工序的加工工艺,针对连杆的结构特点,阐述了重要工序关键加工夹具的设计思路及研制.通过这些夹具的使用,确保了连杆的加工质量和提高了生产效率.     

加快推进装备保障方式变革的思考

一、着眼"聚焦能力",推进装备训练转变 一是深化基础训练.加强对信息化系统知识的学习和基于信息系统装备保障体系能力的本质规律、作用机理、生成模式深化研究,打牢理论基础;突出一体化指挥平台、装备保障指挥信息系统的操作使用训练,提高指挥技能;突出自动检测诊断技术学习和单元置换、拆拼修理训练,提高维修技能.二是强化联合训练.围绕近岸岛屿封控、远岛登陆作战的使命课题,加强以复杂电磁环境为重点的实兵实装实修训练,深化战略加强、战役直属、战术保障、地方支前4种装备保障力量的对接演练,积极探索信息化条件下联保联训的方法路子,提高军民一体区域化保障能力.三是狠抓要素集成训练.     

浅谈工程总承包的成本管理控制

工程总承包是一种合同关系简单、有利于缩短建设周期和投资控制的项目建设方式。在工程总承包模式下,承包商要承担项目的设计、设备采购和施工等全部工作。与单纯的施工承包相比,其造价控制工作内容更加丰富、涉及范围更广、控制工作更加复杂。本文通过对工程总承包模式下造价控制工作的特点进行分析,提出了在工程总承包模式下做好造价控制工作的措施。     

An investigation of the performance of an electronic in-line pump system for diesel engines

WIT Electronic Fuel System Co., Ltd. has developed a new fuel injector, the Electronic In-line Pump （EIP） system, designed to meet China＇s diesel engine emission and fuel economy regulations. It can be used on marine diesel engines and commercial vehicle engines through different EIP systems. A numerical model of the EIP system was built in the AMESim environment for the purpose of creating a design tool for engine application and system optimization. The model was used to predict key injection characteristics under different operating conditions, such as injection pressure, injection rate, and injection duration. To validate these predictions, experimental tests were conducted under the conditions that were modeled. The results were quite encouraging and in agreement with model predictions. Additional experiments were conducted to study the injection characteristics of the EIP system. These results show that injection pressure and injection quantity are insensitive to injection timing variations, this is due to the design of the constant velocity cam profile. Finally, injection quantity and pressure vs. pulse width at different cam speeds are presented, an important injection characteristic for EIP system calibration.     

长洲水利枢纽船闸设备配置对船闸维修的贡献

为适应西江航运繁忙和通航保证率高的需要，长洲船闸从电源设备、控制系统、起重设备、检修专用设备、航道清淤等方面优化配置，达到提高设备检修维护效率，减少船闸停运，提高通航保证率的作用。     

汽车前驱与后驱的优劣

<正>前轮驱动简称"前驱",是指发动机的动力直接传递给前轮而带动车辆前进的驱动方式。形象地说,就是前进时,前轮"拖动"后轮,带动车辆行进。前轮驱