OEA

The results show that for both LPG engine and diesel engine , OEA makes start speed rise .

研究表明，无论是LPG发动机还是柴油机，富氧进气的使用均能够提高发动机的起动速度。

Development and applications of the OEA 1 TV autocollimator

OEA-1电视自准直仪的研制及应用

In experiments , OEA is tested on 4 unconstrained and 6 constrained benchmark problems , and compared with three recent algorithms .

实验中，用4个无约束和6个有约束标准函数对算法进行了测试，与3个新算法作了比较，并对组织进化算法的性能作了深入分析。

The results show that with OEA , the soot , HC and CO emissions all decrease significantly while NOx emissions increase obviously .

结果表明，富氧进气后排气烟度、HC和CO排放显著降低而NOx排放增加明显。

In the present paper , starting from the Fresnel diffraction theory , we analyzed die dif-fraction image properties of the optical element arrays ( OEA ) and obtained the point spread function .

从菲涅耳衍射理论出发，分析了光学元件阵列的衍射成像性质，求得了其点扩散函数。进一步分析了光学元件阵列的综合成像性质，得到了阵列能够成综合像的条件。

China , as the largest apparel producers and exporters in the world , however , are mainly engaged in OEA or OEM , and Chinese apparel producers are mostly involved in low value added sectors .

中国作为世界上最大的服装生产国与出口国，国内服装企业却仍以来料加工为主要经营方式，处于价值链低端。

The fuel supply timing was fixed at 28 ℃ A. The research results show that compared to oxygenated blend fuel , OEA makes longer combustion duration and lower indicated thermal efficiency and soot emissions as well as higher NOx emissions .

结果表明，与使用含氧混合燃料时相比，在供油时刻不变情况下，富氧进气时燃烧持续期长，指示热效率低，排气烟度低而NOx排放高。

With the same fuel supply timing , the characteristics of combustion and emission were studied when the diesel engine was supplied with oxygen-enriched intake air ( OEA ) and the intake air diluted with inert gas Ar 、 N2 and CO2 .

在供油时刻不变的条件下，研究了柴油机富氧进气和常规进气添加惰性气体时的燃烧排放特性。

We discover the relationship between the initial threshold and the optimal threshold in biological evolution by detailed in the population evolution model . Based on the relationship , we improve the threshold updating model ; establish a threshold modification model to obtain a fast and stable OEA .

在进一步细化种群进化模型的基础上，发现了种群进化中初始阈值和最优阈值的关系，改进了阈值更新模型，建立了阈值修正模型，得到了收敛迅速，收敛速度和计算结果稳定的OEA。