Welding quality will also decline if there is strong air movement around the working ambience. 如果焊接环境有较强的空气流动,也可能造成焊接质量下降。
Strategies revolve around air movement, insulation, solar gain rejection and evaporative cooling. 该战略围绕空气流动、隔离、拒绝吸收日光和蒸发式冷却进行。
Within the building, air movement can be directed by roof form, thermal flues, and atria controlled by louvred openings. 在建筑内部,空气流通可通过屋顶形状,暖气管道和四周装有天窗控制的天井调节。
The chest would be protected from air movement and enclosed by the extremities, while the back pointing upwards would be more exposed to wind. 那时,胸腹部被四肢包围,接触不到气流,而朝上的背部会更多地暴露于风中。
Spatial and temporal variations in the air movement are desirable for fresh environments. 空气运动随空间和瞬时而变化是新鲜环境的要求。
The author first obtained the induced air movement different equation, and then proceeded to numerical researches on the equation, and finally discovered the induced air dynamics movement regularity by means of calculating mathematics and computer. 经研究分析得出诱导空气运动的运动微分方程,对运动微分方程进行了数值研究,用计算数学和计算机研究出诱导空气动态运动规律。
Effects of air movement on thermal comfort: a literature review 空气流动对热舒适影响的实验研究:总结与分析
Overviews development in researches of air movement around human body, human response and individual control system and discusses the advantages of individualized control in reducing energy consumption and improving productivity. 综述了在人体周围空气流动、人体反应、个体调节系统方面的研究进展,讨论了个体化调节在减少能耗和提高生产率方面的优势。
Helical port is mainly swirl air movement produced in the port, therefore achieved swirl has no relationship with the valve position of relative cylinder center, valve lift is almost no influence to the swirl ratio. 螺旋气道主要是在气道内产生涡流空气运动,因此所获得的涡流与相对气缸中心的气门位置无关,气门升程对涡流比几乎没有影响。
The paper discusses the causes of having air in pipe, the conditions of pipe with air and the damage of air movement in pipe. 详细论述了管道中的气体产生原因及管道中存气的必要条件,以及气体运动对有压管道所产生的危害。
They can be used for improving the summer thermal environment with increased air movement, play an important role in desiccant cooling and enlarge the heat transfer temperature difference of the air-conditioning equipment to obtain better performance. 它在改善炎热环境、除湿法供冷和扩大传热温差以改善设备性能等方面都能起明显的作用。
Rational Model with Numerical Calculation of Air Movement in Ventilation Ducts of Large Air-cooled Turbogenerator 大型空冷汽轮发电机通风结构中气体运动流场的合理建模
Air movement can improve thermal comfort in "warm" conditions, but it can also cause uncomfortable drafts feelings. 流动的空气可以在较热的环境中大大改善人体的热感觉,但同时也会引起不愉快的吹风感。
A review has been undertaken of the development of main turbulent models which include turbulent transport models and large eddy simulations. It has been concluded that the k-ε turbulent model is one of the best for indoor air movement predictions. 本文论述了紊流输运模型和大涡旋模拟等主要紊流模型的发展概况,指出k-ε紊流模型是用于室内气流分布模拟的最好模型之一。
An Investigation of the Steady Flow Test Rig and Inlet Port for In-Cylinder Tumbling Air Movement in Gasoline Engine 汽油机滚动涡流模拟试验台和滚流进气道的试验研究
A series of tests were carried out to measure the effect of ceiling fans on the air movement. 为测定吊扇对气流的影响,一系列的实验已经完成。
It is proposed that increasing air movement can achieve the purpose of comfort and energy saving under higher temperature and humidity. It is concluded that evaporative cooling air conditioning can create comfort, health environment and save energy consumption greatly. 认为在较高温、湿度条件下,适当提高室内空气的流速可达到舒适、节能的目的,使用蒸发冷却空调可以创造舒适的健康环境,同时可大大节约能耗。
In this paper, design principle on gun of automatic CO2 gas shielded welding with thick electrode is discussed. The air movement situation in the gun and the shielded condition for weld pool are introduced. 论述了粗丝CO2自动焊焊枪的设计原理,并对气流在焊炬中的流动情况和对熔池保护效果作了简要介绍。
The results show that there will be more and newer movements connection, also more complex air movement; 结果表明:将有更多更新的动作连接和更复杂的空中身体变化;
Energy saving research on strengthening indoor air movement to improve thermal comfort 强化室内空气流动以改善热舒适的节能研究
Study on Air Movement in Separate Bell-type Swirl Chamber by Virtue of A Two-dimensional Liquid Flow Model 利用二维液流动模型研究吊钟型涡流室内的空气运动
Rational modeling of air movement in ventilation ducts of large air-cooled turbogenerator is the crucial factor for correct numerical calculation. 采用合理的计算模型对大型空冷汽轮发电机通风结构中气体运动流场进行数值模拟是保证数值计算结果是否正确的关键。
Diesel Engine work process and overall performance depends on matching between the fuel supply and injection system, intake system and air movement and combustion chamber shape ( referred to as oil, gas, room). 柴油机工作过程及整机性能的好坏与供油系统和喷油情况、进气系统和气流组织以及燃烧室形状三者(简称油、气、室)之间的匹配情况有着因果关系。
The human body is an organic whole, the qi all the time running with the whole body, the relation between incidence of Asthma and qi is inseparable. Therefore the pathogenesis is closely related to lung dysfunction as well as the whole body air movement disorders. 人体是个有机的整体,气无时无刻的运行于周身,喘证的发生与气的关系密不可分,故而其病机与肺的功能障碍以及整个机体气的运动障碍有关。
The energy crisis and global warming problem arises the new attention to the positive role of air movement in summer. 能源危机和全球变暖问题的出现迫使暖通工程师们再次重视气流运动在夏季的积极作用。
Previous studies of flow simulation in wind engineering treats the wind as a steady flow. However, air movement near the earth surface is actually the kind of wind whose magnitude and direction change randomly. 以往的数值模拟多是在定常风情况下进行的,但是,近地层大气的运动实质上是一种速度的大小和方向都呈随机变化的风。
Then a new method of determing the optimum velocity was put forward that should not only satisfy the thermal comfort but also meet the acceptability of air movement. 接着提出了一种既满足人体热舒适性又满足气流可接受性的最佳风速范围的确定方法,并从节约能源角度提出了通风控制方案。
Although the design of a ventilation system considered the air flow in an empty space in advance, the air movement could easily be affected by the final layout. 尽管通风系统的设计预先考虑了气流在无隔断空间内的流动形式,但是气流本身很容易受用户室内最终布局影响。