1) virtual source
虚源<光>
2) virtual light source
虚光源
1.
Direct measurement of virtual light source distance in the interference experiment of double prism;
双棱镜实验中虚光源间距的直接测量
2.
The optimum measuring position of virtual light source in Fresnel double prism experiment is found by derivation.
通过推导,找到双棱镜干涉实验中虚光源间距的最佳测量位置,从而减小间接测量引入的误差,提高测量精度。
3.
A new method for testing the distance between double virtual light sources in the experiment for neasuring wavelength of Na light using double prism interence is given by graphic method in this paper.
本文采用作图法研究在双棱镜干涉测钠光波长的实验，总结出以直接测得量检验两虚光源之间距离的新方法。
3) four virtual light
四虚点光源
4) coherent virtual light source
相干虚光源
5) virtual source
虚源
1.
First of all,taking into account the spread of sound waves from air to water,Compared with undersea sound field,sound source in air can be equivalent to the"virtual source"under wate for the calculation.
对空气中声源传播入水的现象和特性作了分析,与水下声源产生的声场相比,空气中的声源可以等效为水中的"虚源"来进行计算,本文在此基础上,提出利用广义互相关时延估计的方法对空中目标的水下检测和定位方法。
6) equivalent imaginary source
等效虚源
1.
For prediction of noise transmited from a source of large area or volume,the point source model is not applicable,therefore an equivalent imaginary source method by experimental simulation is advanced.
通过实验拟合提出了等效虚源法,该新方法可简便准确地预测体声源和面声源在不同距离的影响声级;而对于室内混响窗外传声的声影响预测,采用该方法也会使测量和计算变得十分简洁方便。
补充资料：虚光
xūguāng
[vignette] 使照片或图片中主题的周围渐渐白化,不留下明显的边
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