Air-jet vortex spinning ( MVS) is a new technology for spinning yam by using high-speed airflows and the coordinated action of various components inside the jet nozzle. 喷气涡流纺是利用高速气流和喷嘴内部各部件的配合作用成纱的。
Survey of Speech Anatomy, Respiratory System, Airflows and Pressures. 语音解剖学和呼吸系统的探讨、气流和压力。
It is useful where traditional smoke detection technologies are impractical, such as large open areas and rooms with high ceilings and high airflows. 它还能在传统烟雾探测技术无法使用的场所发挥作用,如大型露天场地和有着很高的天花板和强气流的房间。
Experimental methods focus on measurement and analysis of thermally driven and wind-driven airflows, lighting intensity and glare, and heat flow and thermal storage. 实验方法的重点包括下列数据的量测与分析:由热或风所引起的气流、照明强度和眩光、热流和热储存。
Furthermore, the homogeneity of the air velocity field in the section should not be presented by the percent of the difference between the mean velocity and the maximum ( the minimum) velocity but presented by the percent of the difference of the adjacent airflows. 另外还认为断面速度场的均匀性不宜以断面平均风速与最大(最小)风速差的百分比来表示。
Simulated airflows were laminar mainly in the nasal passage and varied dramatically in the vestibule and nasopharynx. 各气道气流主要为层流,鼻前庭和鼻咽部气流变化剧烈。
However, the lack of reliable tools to predict airflows extremely limits analyses of building energy consumption, dynamic thermal building simulation and passive cooling system design. 目前国内外还缺乏有效的用于定量分析自然通风和渗透问题的工具,这使得研究人员和工程人员在分析建筑能耗、动态模拟室内热环境以及设计被动式通风系统等问题上受到了极大的限制。
Based on analyzing the structure of the nozzle and the effect of high-speed airflows, the mechanism of yarn formation of this method is discussed, and related spinning machine, yarn structure and yarn properties are also discussed. 文章通过对喷气涡流纺喷嘴的结构和高速气流作用的分析,讨论了该成纱方法的成纱机理,并对其纺纱装置、成纱结构和成纱性能进行了初探。
An experimental study on distribution of cold and hot airflows in combustor testing 燃烧室冷、热态流量分配试验研究
The results show that Prandtl mixing length theory predicts airflows better than zero-equation model provided by Chen, and that Prandtl mixing length theory is more reasonable than zero-equation model provided by Chen but Chen's model seems easier to converge from the analyses of their construction. 从这两种零方程模型的构造分析,Prandtl混合长度理论较为合理,但Chen的零方程模型更容易收敛。
The airflows in unfurnished room were the simulated. 最后,模拟假定房间中的空气分布。
Mixing characteristic of airflows in a tangential pulverized coal-fired boiler where the natural gas reburning technology was used to control NOx production was discussed in this thesis. 本文论述了在四角切圆燃烧煤粉锅炉上采用天然气再燃技术降低NOx排放时的炉内气流混合特性。
The two dimensional dynamic characteristics of airflows are systemically analyzed for the first time of the machine and common simulation winds and the natural winds under different outdoor environments, with the near earth natural winds as cores. 以不同环境的近地表自然风样本为核心,首次系统地分析了机械风、普通模拟风和不同环境自然风气流运动的两维动态特性参数。
The airflows in unfurnished room were then simulated. 最后,模拟了假定空房间中的气流。
Based on the commercial code STAR-CD, a mathematical model of airflow in a DPF was established by an equivalent continuum approach, and steady airflows inside DPF were simulated with different reverse blowing pipes collocation. 采用计算流体力学软件Star-Cd,利用当量连续方法,建立了微粒捕集器的数学模型,分析了反吹管结构对过滤体内反吹气流的流动均匀性和压力损失的影响,并进行了试验验证。
The advance of mine separate airflows of solution at present 当前矿井分风的算法进展
The Uniform Flow Field Used for Precise Calibration of Large Airflows 用均匀流场准确校验气体大流量
The strengthening of westerly jet in upper level, forming of blocking high in Eastern China, strengthening and extending northward of the warm and moist southerly airflows in low level provide the advantageous conditions for heavy storm rain. 高空西风急流增强、我国东部高压的阻挡及低层偏南暖湿气流的加强、北伸为发生暴雨提供了有利条件。
Numerical Simulation of Airflows in Unfurnished Room 封闭空间内的气流数值模拟
The paper calculates the concentration of HCHO respectively in two kinds of airflows, analyzes the distributions of the concentration field, non-dimensions concentration field, and air change efficiency, and compares the results of calculation with others using CFD method. 利用CFD软件模拟计算了两种气流组织方式下室内甲醛的浓度场,分析了室内浓度场、无因次浓度、空气交换效率的分布规律,并与传统计算方法的结果进行了比较。
High speed cooling airflows and large engine surface area to volume ratio decrease both engine thermal load and efficiency. 高转速的强制冷却效果以及比表面积大的体积效应减少了热负荷,同时降低了热效率。