To discuss the feasibility of the building of Chonghai Yangtze River Bridge, the authors delimit the influence districts and based on the traffic investigation, analyse the over-river traffic characteristic and forecast the traffic flow in future with the "four-step" method.
为了论证崇海长江公路大桥建设项目的可行性,通过对项目影响区的界定,在交通调查的基础上,对项目所在区域的过江交通特性进行了分析,运用"四阶段"法对项目未来特征年的交通量进行了预测,并研究了崇海大桥在未来区域路网结构中的地位,认为崇海长江公路大桥建设势在必行。
Grain refinement of heat affected zone of high strength low alloy steel by large heat input welding;
大热输入焊接高强度低合金钢热影响区的晶粒细化
Thermal simulation experiments of welding heat affected zone of 2.25Cr-1Mo-0.25V heat resistance steel;
2.25Cr-1 Mo-0.25V耐热钢焊接热影响区热模拟试验研究
Effects of immediate water cooling and normalization after welding on microstructure and hardness of heat affected zone of ultra-fine grain steels welded joint;
紧急水冷及焊后正火对超细晶粒钢接头热影响区组织与硬度的影响
The results show that the grain size grows up obviously in the heat affected zone(HAZ)of all the arc welded joints,the mechanical properties of the arc welded joints by manual arc welding and submerged arc welding.
结果表明,400MPa级超细晶粒钢电弧焊焊接接头热影响区存在着明显的晶粒长大现象;手工电弧焊和埋弧焊焊接接头性能明显下降,而二氧化碳气体保护焊焊接接头性能下降不明显。
Crystalline Grain Size in HAZ of Ultra Fine Grain Steel at Different Parameters;
不同参数下超级钢焊接热影响区晶粒尺寸
THE HAZ STRUCTURE AND PROPERTIES OF ULTRA-FINE GRAINED STEEL COMPOSED OF Nb;
含铌细晶粒钢的热影响区组织性能
Toughness Distributions of Different Area on HAZ of Grade X80 Pipeline Steel;
X80级管线钢焊接热影响区不同区域的韧性分布
Microstructure of the Fe-based coating by plasma cladding and characteristics of its heat-affected zone;
等离子熔覆铁基涂层组织结构及热影响区特点
Laser welding of high nitrogen steel 1Cr22Mn16N Ⅲ.Microstructure and mechanical properties of welding heat-affected zone;
1Cr22Mn16N高氮钢的激光焊接Ⅲ.焊接热影响区组织和性能
Microstructures and properties of simulated heat-affected zones of 06CuNiCrMoNb age hardening steel;
06CuNiCrMoNb时效硬化型钢模拟焊接热影响区的组织和性能