历史查询   



 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。 
The optimal distance between these chords and the edge of the image of the drop is chosen within 1020% of the radius of the equator.


We also extend study in deriving and optimizing theoretically the optimal distance between the two optimal microcarrier shapes.


The optimal distance between the atoms generating the "cacheoreilles" system for exhibiting potent PAF antagonistic activity is estimated to be 1113 ?.


The optimal distance geese nested from eyries was 46?m, though only 37% of pairs managed to nest within 20?m of this.


A third spectrometer would offer more freedom of choice for the optimal distance between analyte and background channels and would permit estimation of background under the analyte lines by interpolation between adjacent positions.

 更多 


 This paper established a mathematical model of optimal absorber plate of sheet and tube for flatplate solar collector.Also obtained a general computing program for optimal absorber plate of sheet and tube.Employing various coatings and various glass cover layers and various touch resistances and various flow manners,the optimal distance between the tubes and optimal sheet thickness and optimal tube dimension,when the cost efficiency parameter is minimal value,have been computed for wide use... This paper established a mathematical model of optimal absorber plate of sheet and tube for flatplate solar collector.Also obtained a general computing program for optimal absorber plate of sheet and tube.Employing various coatings and various glass cover layers and various touch resistances and various flow manners,the optimal distance between the tubes and optimal sheet thickness and optimal tube dimension,when the cost efficiency parameter is minimal value,have been computed for wide use absorber plate of steel tube and sheet in China.  本文利用平板集热器管板式集热板的最佳化数学模型,计算得到了我国目前应用较广泛的铁管板式集热板的最佳化参数——在最小成本/效率参数时的最佳管间距、最佳板厚以及最佳管径。  After a large earthquake took place, the accumulated stress and strain in focus and its neigborhood was released quite fully, so that the parallel faults in a centain range couldn't accumulate enough stress and strain to result in a large earthquake for some time. It means that a large earthquake has an effect of reducing seismic risk of in some distance for some time. So it is important to determine the distance and buration of reducing seismic risk. This paper, on the basis of the large earthquakes occured... After a large earthquake took place, the accumulated stress and strain in focus and its neigborhood was released quite fully, so that the parallel faults in a centain range couldn't accumulate enough stress and strain to result in a large earthquake for some time. It means that a large earthquake has an effect of reducing seismic risk of in some distance for some time. So it is important to determine the distance and buration of reducing seismic risk. This paper, on the basis of the large earthquakes occured in mainland of China, calculated the earthquake intervals for different length of time, From these statistial data the dominant interval and the optimal distance of reducing seismic risk were got. The dominant interval and the optimal distance of reducing seismic risk are inversely proportional to length of time. The distribution of earthquake intervals can be simulated by a normal probability function. Besides, the ground displacement at the distance of reducing seismic risk was given by the elastic dislocation theory.  本文对中国大陆内部不同时段发生的七级地震和六级地震分别进行统计分析,求得不同震级的优势地震间距,减震距离以及地震间距随时间变化的关系式。提出地震间距的数值分布可用正态概率分布函数描述,并得到含有时间参量的地震间距概率密度函数。此外,根据弹性位错理论,求得一次地震后在减震距离处所产生的位移,进而求出平均位移速率。  It is of the key importance to choose the parameter s/r for the design of the light coupling from a laser diode into a multimode fiber with spheric end. This paper discusses a method by which the optimal radious of curvature of the sphericlensed fiber roptim and the optimal distance from the endface of the fiber to the light source soptim can be rather easily found. In this method the analytic expressions of γmin and (y/r) γmin are derived because y/r is adopted as the variable, therefore, the parameter... It is of the key importance to choose the parameter s/r for the design of the light coupling from a laser diode into a multimode fiber with spheric end. This paper discusses a method by which the optimal radious of curvature of the sphericlensed fiber roptim and the optimal distance from the endface of the fiber to the light source soptim can be rather easily found. In this method the analytic expressions of γmin and (y/r) γmin are derived because y/r is adopted as the variable, therefore, the parameter (s/r)optim can be determined precisely.  选取s/r,是光纤端面球透镜耦合设计的关键。本文主要讨论求最佳的光纤球面状端面曲率半径roptim和光纤端面到光源距离soptim的一种较为简便的方法。由于采用y/r作变数就可以给出(y/r)_(γmin)的解析表达式,所以可以把参数(s/f)_(optim)的确定做得很精确。   << 更多相关文摘 
相关查询  



