1) sound radiation efficiency
声辐射效率
1.
Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods,BEM methods and statistical energy methods.
利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。
2.
The experiment of sound radiation efficiency and engine noise test were carried out when the engine was equipped with thin-wall components with free and compound damping.
采用表面振动法进行了柴油机表面辐射噪声的诊断,并对附加自由和复合阻尼的薄壁件进行了声辐射效率试验研究和整机试验。
2) radiation efficiency
辐射效率
1.
A uniform representation in the calculation of seismic radiation efficiency and rupture speed;
震源辐射效率计算的一致性方法
2.
The percentage of fuel in natural gas and air mixtures has large influence on radiation efficiency.
催化燃烧是一个异相氧化过程,它的优点在于燃烧的排放接近零污染,燃气与空气之间的比例关系对系统的辐射效率有相当大的影响。
3.
The radiation efficiency will be reduced quickly if mode number is increased at low frequency.
以简支矩形板为例 ,通过声辐射模态控制结构噪声 ,并分析了声辐射模态的数学和物理意义 研究发现在中、低频时 ,辐射模态对应的辐射效率随着模态阶数的增加而迅速降低 本文以点力作动器作为控制力源 ,以声功率最小化为控制策略进行主动控制 并且进行了数值计算研
3) radiant efficiency
辐射效率
1.
An infrared gas range with ceramic plaque has a radiant ceramic plaque which raises its radiant efficiency, and needs fewer excessive air that results in higher theory combustion temperature and fewer venting heat loss, and its shorter panrest increases the heat exchange and reduces the thermal radiation to surroundings.
分析了陶瓷板红外线燃气灶热效率比大气式燃气灶高的原因:具有陶瓷板辐射体,辐射效率高;燃气燃烧需要的过剩空气系数小,致使理论燃烧温度高,增强了换热,减少了排烟损失;锅支架高度小,有利于增加换热量和减小向周围的辐射散热损失。
2.
With the rapidly developing of microstrip antenna in the military and commercial fields,narrowband and low radiant efficiency become the bottlenecks for its further development.
随着微带天线在军事和商业领域内迅速发展,微带天线的频带窄以及辐射效率低成为制约其发展的两大“瓶颈”,因此展宽频带和提高辐射效率成为当前微带天线的研究热点。
4) radiation efficiencies
辐射效率
1.
It is presented radiation modes and radiation efficiencies using relationship between surface normal velocities and surface sound pressure of vibrating structures and gives one definition of the weight coefficient of sound radiation.
本文通过振动结构表面的法向速度和表面声压之间关系,得到了振动结构的声辐射模态和辐射效率并给出了声辐射模态伴随系数的定义。
2.
In this paper, it is presented radiation modes and corresponding radiation efficiencies using relationship between surface normal velocities and surface sound pressure of vibrat.
通过振动结构表面法向速度和表面声压之间的关系,给出板、梁振动结构的声辐射模态及其对应的辐射效率,并给出声辐射模态伴随系数的定义。
5) noise equivalent eradiation difference
噪声等效辐射率差
1.
Both the mathematical mode of noise equivalent temperature difference(NETD) and the noise equivalent eradiation difference(NEED) are established for micro thermal imaging systems.
研究了显微热成像系统的噪声等效温差(NETD)和噪声等效辐射率差(NEED)模型,分析了显微热成像与望远模式热成像的差异。
6) radiation value
辐射值;辐射效率
补充资料：配置效率和生产效率
在经济学上，经济发展的动力，或者说效率的来源，分为两类：一类是配置效率，二是生产效率。所谓配置效率，是指给定资源和技术的条件下，怎么样使资源从边际生产率低的地方流向边际生产率高的地方，从而使得资源和利用更合理、社会总价值达到最大;而生产效率是指如何通过技术进步提高每一种资源的生产率，也就是把社会的生产可行性边界向外移。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条