Seabed scene simulation and its realization in extending Vega

Realistic simulation of underwater scene is always difficult because of the special and complex vision effects in underwater space. Seabed is an important part of underwater environment. This paper describes the methods for seabed scene simulation based on OpenGL. It includes construction of fluetuant terrain based on the random sinusoidal algorithm, simulation of seabed flicker effect by means of circular texture mapping and generation of turbidity effect by using fog techniques. For the application based on the leading high level 3D development environment-Vega, underwater scene simulation is still a difficulty since there is no module for it. Based on the analysis of Vega software and the research on seabed scene simulation methods, a Vega extending module named “Underwater Space” was created through developing module class and extending lynx interface. The module class was designed through developing DLL written in C . The Lynx was extended through developing keyword configure file, GUI configure file and lynx plug-in DLL. The problem that Vega can‘t simulate underwater space, is elementarily resolved. The results show that this module is efficient, easy using, and the seabed scene images am vivid.     

科威特工程三航砼7船的适应性改造

在科威特舒艾拜油码头工程砼施工中，对砼的配比、搅拌、输送、出模温度、作业的可靠性都有很高的要求。文中介绍了针对上述要求对三航砼７船进行的技术改造措施和效果。     

欧盟

欧盟通过与“3MSP”相关的“政治协议”；欧盟水域船用油含硫量新规实施；欧盟对丹麦新吨位税制展开调查。     

阿特拉斯·科普柯的节能策略

阿特拉斯·科普柯日前推出了面向中国市场的全新系列喷油和无油压缩机，以及空气干燥机。新一代高效压缩机和干燥机在可靠性、高效节能和空气质量方面有了全面提升。     

宇航级品质——宇航龙A800脂类全合成机油试用

车主一:蒋秋林车型:YAMAHA WR450(排量450mL)多年来我使用过很多种油品,长久的野外探险的经验告诉我,品质良好的机油是你走出严酷条件的保障。记得有一次探险途中加上冒牌机油,第二天清晨检查油位,惊讶地发现曲轴箱内油几乎烧干,才短短的200多公里路程。2014年环塔拉力赛前期一位朋友介绍我使用宇     

发动机冷却水温度过高的检查与排除

发动机冷却水温度的高低直接影响发动机的使用寿命。为了保证发动机的正常工作，要求冷却水温度一般要保持在80℃-90℃的范围内。若发动机冷却水温度过高，会导致发动机功率下降，零部件因润滑不良而加剧磨损等不良影响。     

沥青混凝土拌和机重油系统改造

前言 我们先后考虑了几种替代的燃料。用于沥青混凝土拌和机燃油通常有固体燃料（煤），气体燃料（天然气）．液体燃料（柴油、重油、沥青、其它废油、原油），选择在考虑经济性的同时，还应结合场址的局限性、投入设备多少、环境保护、降低劳动强度、劳动安全等因素。其方案比较如下：