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通道
相关语句
  channel
    EXPERIMENTAL STUDY ON SIDE EFFECT OF NATURAL CONVECTION CHANNEL FLOW BETWEEN ISOTHERMAL VERTICAL PLATES
    等温竖平板通道自然对流端部效应的实验研究
短句来源
    A Numerical Prediction for Channel Turbulent Flow Field with a Triangular Bluff-Body
    绕流三角形钝体的通道流场的数值预测
短句来源
    Mixed Convection in a Vertical Porous Channel
    竖平板多孔通道的混合对流
短句来源
    EXPERIMENTAL STUDY OF TWO DIMENSIONAL FULLY DEVELOPED TURBULENT CHANNEL FLOW
    矩形通道内二维充分发展紊流流场的实验研究
短句来源
    Analysis of a Cast-iron Boiler Divergent-conver gent Channel Flow and Heat Exchange Test Results
    铸铁锅炉扩缩通道流动与换热实验结果分析
短句来源
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  passage
    Passage Error in Measuring Cylinder Pressure
    气缸压力的测压通道误差
短句来源
    Numerical Calculation on the Working Process for Diesel Engine with the Pre-Combustion Chamber of Variable Passage
    可变通道预燃室式柴油机工作过程的数值计算
短句来源
    A Computational Study on Discharge Coefficient of Connecting Passage of Swirl Chamber Diesel Engine
    涡流室柴油机连接通道流量系数的计算研究
短句来源
    A STUDY OF THE DISCHARGE COEFFICIENT OF CONNECTING PASSAGE OF SWIRL CHAMBER DIESEL ENGINE
    涡流室式柴油机连接通道流量系数的研究
短句来源
    An Air Flow Analysis of the Swirl Combustion Chamber with a Variable Passage
    变通道涡流室式燃烧室气体流动的分析
短句来源
更多       
  the channel
    Optimization and Application of the Channel Separator
    通道式分离器性能的优化及其应用
短句来源
    It was discovered in experiment that the change of Reynolds number influenced the distribution trend of flow field unobviously regardless in the channel and in the holes but the value of the velocity in the holes.
    实验中发现雷诺数的变化对通道内的流场分布趋势影响较小,对孔内的流场分布趋势影响也较小,但是对速度值影响较大;
短句来源
    The inclining angle of the fin is from 0°to 23.2°and the dimensionless height of the channel is from 1.167 to 2.833. The effects of the inclining angle and the channel height on the thermal performance have been verified by numerical simulation for different Reynolds numbers.
    翅片倾斜角度从0°到23.2°,无量纲通道高度从1.167 到2.833。
短句来源
    The major conclusions of this study are following:1) The effects of jets, cross-flow and different position outflow on the flow fields in the channel are strong.
    在对冲击/旋流/气膜出流冷却结构进行系统研究后,得出以下主要结论:1,射流、横流、不同位置出流对通道流场影响很大。
短句来源
    In the experiments the inner diameter of the channel is 12.34mm and the outer diameter is 19.00mm.
    实验采用环管内径为12.34mm,外径为19.00mm,通道外壁绝热,内壁为恒热流.
短句来源
更多       
  “通道”译为未确定词的双语例句
    Visual Study and Analysis on Flow and Heat Transfer in Microchannel
    微细通道内流动与换热可视化实验研究与分析
短句来源
    Experimental and Theoretical Study on Flow Boiling in Microchannel
    微细通道内流动沸腾的实验和理论研究
短句来源
    OPTIMIZATION OF VERTICAL MULTI-CHANNEL NATURAL CONVECTION
    等温竖平板通道自然对流换热优化的实验与理论研究
短句来源
    A PHYSICAL SIMULATION OF THE AERODYNAMIC PROCESS IN CEMENT KILN WITH A THREE-CHANNEL COAL POWDER BURNER
    三通道煤粉燃烧器的水泥窑内空气动力过程物理模拟
短句来源
    A New Type of Pulverized Coal Main Burner Firing Stably with Efficiency and Low NO_x—Universal Pulverized Coal Main Burner with Double Air Conduit
    一种高效、低 NO_x、强稳燃新型煤粉主燃烧器——双通道通用煤粉主燃烧器
短句来源
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  channel
Aliasing error bounds are derived for one- and two-channel sampling series analogous to the Whittaker-Kotel'nikov-Shannon series, and for the multi-band sampling series, and a "derivative" extension of it, due to Dodson, Beaty, et al.
      
Aliasing in the one-channel case is shown to arise from a transformation with similarities to a projection.
      
An Estimation of the Truncation Error for the Two-Channel Sampling Formulas
      
Guanidine-type compounds that reached clinical status include amongst others the potassium channel opener, pinacidil and the histamine H2-receptor antagonists (e.g.
      
The tetra-n-butylammonium cations were stacked to give two columns within each channel with cross-sectional size of about 2.30 nm × 0.93 nm.
      
更多          
  passage
Test investigation on hydraulic losses in the discharge passage of an axial-flow pump
      
In a discharge passage with a guide blade discharge circulation and secondary flow because of bend pipe, the flow in a 1-channel discharge passage of an axial flow pump is a complicated spiral flow.
      
For a 2-channel passage, the discharge in the left channel is bigger than that in the right, and the passage hydraulic losses are abnormal.
      
In this study, the section current energy of the passage is accurately measured and determined with a 5-hole probe.
      
The results indicate that the passage hydraulic losses are not proportional to the flow discharge.
      
更多          
  the channel
The channel parameters are estimated and transmitted signals are jointly detected by a simple recursive algorithm derived from the EM/SAGE algorithm.
      
Compared with the dynamic threshold method, the balance encoding scheme can be implemented more easily, and is more robust to the channel time variant characteristics, the channel estimation of RAKE receiver and the combination techniques.
      
Sensitivity analysis of the channel estimation deviation to the MAP decoding algorithm
      
As a necessary input parameter for maximum a-posteriori(MAP) decoding algorithm, SNR is normally obtained from the channel estimation unit.
      
In underwater acoustic communication, because the available bandwidth of the channel is severely limited, the direct-sequence spread-spectrum scheme can only be realized at low bit rates.
      
更多          


Heat transfer and friction correlations are provided for turbulent flow in concentric annuli having different ribroughness. In order to clearly predict the influence of roughness parameter on heat transfer coefficient, the experimental data obtained by previous workers are correlated in the following formand the friction correlation isThe correlations were verified experimentally covering the range: 0.009≤h/de≤0.05, 7.2≤,s/h≤21, Pr=0.7-11 Re=8×103-1.2×106, rib geometries were square, triangular and circular.In...

Heat transfer and friction correlations are provided for turbulent flow in concentric annuli having different ribroughness. In order to clearly predict the influence of roughness parameter on heat transfer coefficient, the experimental data obtained by previous workers are correlated in the following formand the friction correlation isThe correlations were verified experimentally covering the range: 0.009≤h/de≤0.05, 7.2≤,s/h≤21, Pr=0.7-11 Re=8×103-1.2×106, rib geometries were square, triangular and circular.In this study excellent results for compound roughened surface with both ribs and grooves were also obtained. Heat transfer rate through this type of roughened surface is obviously higher than pure ribbed surface, but friction factor is only slightly larger.

本文在总结大量实验资料基础上提出了对带横肋和圆形绕丝的环形通道中的换热和阻力计算公式,分析了粗糙元参数和流体Pr数对粗糙通道热力性能的影响。文中还分析了肋加槽型复合粗糙面的优良性能,提出相应的计算公式。

Regarding the passage as a linear elastic system and using the frequency

本文视通道为一线性弹性系统,使用频率响应法,给出了对其自振频率及示功图上出现的腔振,相移和图形失真误差的理论和实验分析。要得到不失真的示功图,应使整个测量系统的频率特性在50倍被测压力基频范围内平坦。因此,应尽量提高测压通道的自振频率,这可以用加大通道直径、缩短通道长度来达到。通道的自振频率可由(8)式计算。燃烧发火时,在测压通道入口处发生压力对时间一次导数的跳跃,从而激起腔振(式(29))。腔振可通过增加通道阻尼或加接滤波网络来消除。后一法更为有效,因为此时仍可使用高自振频率的通道。示功图的相移可用热力修正法修正。

This paper analyzes the improvements of starting performance of the mode 485 diesel engine by improving the construction of the swirl chamber. The sphere-cone-flat bottom swirl chamber made of new designed swirl chamber insert is called the QZ-type swirl chamber. Its parameters are the volume ratio Vk/Vc = 37.3%; the compression ratio ε= 20.5; the passage-area ratio fk/Fp = 0.96%; the dipping angle of the passage, α=40°, the radius of the element of the sphere-cone of the insert, R = 30.5mm; swirl ratio Ωc≈46;...

This paper analyzes the improvements of starting performance of the mode 485 diesel engine by improving the construction of the swirl chamber. The sphere-cone-flat bottom swirl chamber made of new designed swirl chamber insert is called the QZ-type swirl chamber. Its parameters are the volume ratio Vk/Vc = 37.3%; the compression ratio ε= 20.5; the passage-area ratio fk/Fp = 0.96%; the dipping angle of the passage, α=40°, the radius of the element of the sphere-cone of the insert, R = 30.5mm; swirl ratio Ωc≈46; the cone-shaped starting hole 30°×φ2mm, the dipping angle (β=60°. The cold starting performance of the diesel with the QZ-type swirl chamber is superior to that of the diesel with the co-met-V-type (that is,the original diesel) or with the D-type, for it is easily started without preheating at 10℃ temperature. On therated speed load performance curv e,the specific fuel consumption (ge) of the diesel with "QZ" is 194.8g/PS·h, that is 8.2g/PS·h less than the original diesel at the rated horsepower 37PS. On the full load speed performance curve, the maximum horsepower (Nemax) is 42.8 PS, that is 1.5 PS more than the original diesel at n=2100rpm. The above conclusions have been verified by testing and computing.

本文主要分析从改进485型柴油机涡流室式燃烧室的结构来改善起动性。由新设计的涡流室镶块所构成的球锥形平底涡流室称QZ型涡流室式燃烧室。它的容积比V_k/V_c=37.3%;压缩比ε=20.5;通道面积比f_k/F_p=0.96%,通道倾斜角a=40°;镶块球锥面的母线的半径R=30.5mm;涡流比Ω≈46;漏斗形起动孔30°×φ2mm,倾斜角β=60°。装有QZ型涡流室的冷机起动性能较好,在气温10℃时,不用预热即可顺利起动,显然优于具有彗星Ⅴ号涡流室的原机或改装D型涡流室;在标定转速负荷特性上,在标定转速标定功率37PS时测得燃油消耗率g_θ=194.8g/PS·h,比原机降低8.2g/PS·h;在外特性上,当n=2100rpm时,测得最大功率Ne_(max)=42.8PS,比原机增加1.5PS。上述的结论已由实验和计算所证明。

 
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