rectangular pipe造句
例句与造句
- between july 19 and august 7, doc of the u . s . a . initiated antidumping duty investigations against light-walled rectangular pipe, laminated woven sacks, and tubenew pneumatic off-the-road-tires from china
从7月19日到8月7日，美国商务部相继对原产于中国的薄壁矩形钢管、编织袋、非公路用轮胎发起反倾销调查。 - the piping workshop is equipped with three sets of pipe-welding machines and thereby may produce carbon steel and stainless steel round pipes in the sizes of 161140.84.5mm, and rectangular pipe in sizes of 15158080
制管车间装有4576及114三套焊管机组，可生产规格为161140.84.5mm的碳钢和不锈钢焊接圆管，以及规格为15158080的方矩形管。 - based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi-parameters . we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ) . the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在总结和分析了一个世纪以来有关曲线管道流动和换热特性的研究成果的基础上，以旋转正交曲线坐标系统下的多参数旋转螺旋管道中的对流传热为物理模型，通过摄动方法和有限体积法，首次对各种截面(圆截面、椭圆截面、环形截面、矩形截面)旋转曲线管道内充分发展流动的流动结构和传热特性(包括耦合对流传热特性)以及旋转曲线管道开口段发展流动的流动结构和换热特性进行了系统的数值模拟和理论分析，详细讨论了各种无量纲参数对管道内轴向速度分布、二次流结构、温度分布、壁面摩擦力、摩擦系数比以及管道nusselt数的影响，获得了若干创新性成果。 - It's difficult to find rectangular pipe in a sentence. 用rectangular pipe造句挺难的