地桩沉降量单片机智能检测系统的研究

论述了以８０３１为控制核心的地桩沉降量检测系统的工作原理、系统组成。重点介绍了主要硬件电路的设计特点及软件设计思想，提供了部分硬件电路图及控制软件流程图。该系统具有自检、置数、动态显示、数据处理、打印等功能，使用方便，造价低     

Φ12LMQ型钢筋冷拉机原理及主要参数选择

介绍了一种新型钢筋冷拉机的工作原理和主要参数：变形速度Ｖ△Ｌ、单位时间伸长率ε、送进速度Ｖ２、冷拉速度Ｖ１及其之间的关系．这种冷拉机具有生产率高、冷拉质量稳定等特点．     

航用海图应满足的条件及其投影方法的讨论

讨论了航用海图应满足的条件及其投影方法。     

矢量在坐标轴上投影的意义

指出对矢量在坐标轴上投影意义一些错误的表示和认识.     

连铸小方坯的组织与性能研究

The hot cracking of the continuous casting bullit is connected with its macrostructure and mechanical property burnt. The macrostructure and the mechanical property of 0. 13 wt- %C continuous casting bullit was investigated. The results are as follows: 1) the classical representation of the casting bullit shows three distinct zones, a peripherial region of small equiaxed grains, a columnar zone, and a central equiaxed zone. The rapid increase of the under cooling layer thickness is the criterion of the transformation from the columnar zone to central equiaxed zone; 2) The hardness decreases with the reducing of the solidification speed; 3) The tensile strength decreases gradually from the peripherial equiaxed maximum principal strain zone to central equiaxed zone ,and increases with the drop of the temperature.