1.
In actual practice a brighter image is obtained by using a broad, rather than a point, source along with a substage condenser.
在实际工作中，不是用点光源而是用一个扩展光源加一个台下聚光镜以得到一个较亮的象。
2.
Keep in mind that each source point on the extended source is incoherent with respect to the others.
要记住，扩展光源上各个点之间彼此都是不相干的。
3.
Extended sources of this sort are generally referred to as incoherent but this description is somewhat misleading as we shall see in a moment.
这种扩展光源一般叫做相干的。但是我们不久就会看到，这种叫法会使人产生一些误解，
4.
Expansion depth of the field in holography by multiple laser sources
多光源分区照明实现全息照片的景深扩展
5.
A Model to Predict Range Performance of Imaging System for Extended Target Based on Mininum Resolvable Contrast
基于光电成像系统最小可分辨对比度的扩展源目标作用距离模型
6.
Light waves weaken as they spread out from a source.
光波从光源扩散时，强度减弱。
7.
Diffused light source: Any light source which produces indistinct and relatively light shadows with a soft outline .
扩散光源:造成朦胧，边缘柔和浅色阴影的光源。
8.
A comparative study of the beam-width spreading and angular spread in atmospheric turbulence
大气湍流中光束束宽扩展和角扩展的比较研究
9.
The beam does not spread out appreciably, even at large distance from the source.
它的光束，即使离光源极远，也不显著扩散。
10.
Research on Passive Optical Network and Code Division Multiplexing Optical Access with Chaotic Spread Spectrum Sequences
无源光网络和混沌扩频码分多址光接入研究
11.
Wave band extension of CW ring dye laser
环型腔连续波染料激光器的波段扩展
12.
Research on Laser Scanning Projection Display and Extended Applications;
激光扫描投影显示的研究与扩展应用
13.
Expandsion of Adaptive Optics Simulation Modeling on SciSimu
自适应光学仿真建模在SciSimu上的扩展
14.
The Study of Northeast Power Grid Least Cost Generation Expansion Plan;
东北电网最小成本电源扩展规划研究
15.
MPBGP extensions on open source routing software XORP
开源路由软件XORP的MPBGP扩展方法
16.
Expanding Efficiency of Recessive Resources of Ideological and Political Education in Universities
论高校思政隐性教育资源的效能扩展
17.
The Expansion and Development of the Human Resources in the Library of Higher Vocational College
高职院校图书馆人力资源的扩展开发
18.
Alert correlation of multi-source data based on extended colored Petri net
基于扩展CPN的多源数据报警相关性