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空气重量
相关语句
  相似匹配句对
     NEW AIR
     新空气
短句来源
     The Weight of Happiness
     幸福的重量
短句来源
     NEWAIR
     新空气
短句来源
     (4)the brain weight.
     (4 )脑重量
短句来源
     At the same time the increment of balanced absorbing water reaches 30% of the sample weight in air so it can be used as drier.
     同时 ,该样品在空气中平衡吸水增重量接近 30 % ,也可用做干燥剂。
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  weight of air
The mean lung wet weight of air-breathing controls at 60 h was 1.2±0.01 g, and that of vehicle-treated, oxygen-exposed animals was 2.45±0.05 g.
      
A hot-air balloon will rise until the weight of air displaced equals the total weight of the balloon.
      
However the low thrust/weight of air breathing engines tends to cancel the advantage of reduced fuel consumption.
      
Includes experiments demonstrating the weight of air, as well as examples of its importance.
      
Plot of Weight of Air Sample Against Measured Zinc Concentration 5.
      


This paper analyses and compares several typical power correction

本文分析比较了国内外几种典型的汽车柴油机功率修正方法。指出现有的各种修正公式建立过程中,不同程度地采用了数理统计方法,未能充分考虑到各个柴油机空气重量充量、指示效率随大气状况变化而变化规律上的差异,致使修正精度受到影响。据此,作者提出一个以ISO1585/79修正方法为基础,考虑到上述差异的修正公式,提高了修正精度,扩大了适用范围。

Based on the fundamentals of heat transfer and a great number ofexperiments,this article explains an economic and effective way in impro-ving the heat transfer function of the fin-tube type water-air radiator com-ponents.By changing the structure and the geometric sectional form of thefins,the airflow is cut off and seperated time and again while it passes thecascade passage formed by the tube and fin without increasing the airflowrate U and Reynolds number Re.In this way the airflow boundary layeron each side...

Based on the fundamentals of heat transfer and a great number ofexperiments,this article explains an economic and effective way in impro-ving the heat transfer function of the fin-tube type water-air radiator com-ponents.By changing the structure and the geometric sectional form of thefins,the airflow is cut off and seperated time and again while it passes thecascade passage formed by the tube and fin without increasing the airflowrate U and Reynolds number Re.In this way the airflow boundary layeron each side of the fin is thinned and even eliminated so that the air heatextraction α_a is increased and heat resistance is reduced.Therefore heattransfer coefficient K will be increased markedly.Moreover large quantity ??of nonferrous metals will be saved due to the reduction of the volume andweight of the radiator components.

本文根据传热学基础理论并在大量试验的基础上,阐述了提高管片式水-空气散热器元件传热性能的经济而有效的技术途径,采用改变助片(散热片)的断面几何形状和肋片结构的措施,使气流在管、片所组成的栅栏式通道中流过时,在不提高空气重量流速U及雷诺数Re的条件下,使气流不断地被切断和分离。以此来减薄和消除肋片两侧平面的气流附面层,强化空气换热系数α_a,降低肋片的热阻,从而显著提高传热系数K值。因而可以减小体积和重量,节省大量有色金属。

 
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