A modified fractal zone plate (FZP) with the character of extending the focal depth is proposed.
提出了一种具有增大焦深特性的改进型分形波带片(fzp)。
The local horizontal dislocation reaches about 4 km in the medium at the focal depth, where the upper mantle rises.
在震源深度附近的介质中，局部水平错动可达4公里左右，上地幔顶部在此隆起。
The principle for improving microlithographic resolution and focal depth with phaseshifting mask is described in detail in the paper.
详细地论述了相移掩模提高光刻分辨力和改善焦深的原理。
The analysis of the lateral and axial properties shows that the focal depth of the modified FZP is larger than the FZP under the broadband lighting.
分别从横向和纵向两个方面分析了改进型分形波带片的光场分布，结果表明，在宽带光照明下，改进型分形波带片的焦深也大于常规的分形波带片。
Focal depth plays an important role in optical storage systems, and high focal depth makes the focusing servo system easy to track the disk surface.
焦深在高密度光盘存储系统中具有十分重要的作用，大焦深可以使调焦伺服系统容易跟踪盘面。
The paper introduces the distribution and utilization of confined water of intermediate focal depth in Huaibei plain, and analyses some relevant questions about it.
介绍淮北平原在中深层地下水分布及开发利用，对与中深层地下水开发利用相关问题进行了分析。
We used the catalog of Earthquake Administration of Xinjiang and HYPODD to analyze the characteristics of focal depth and its tectonic significance in Urumqi region, Xinjiang.
采用新疆维吾尔自治区地震局精度较高的常规地震目录和双差定位目录，对乌鲁木齐地区震源深度的分布特征及与断层的关系进行了研究。
We analyzed the cause of focal depth distribution and explained the precursory mechanism of small and moderate earthquakes with occurrent condition and characteristics of strong earthquakes.
通过分析中小地震深度分布特征的原因，结合强震发生的条件和特性，对中小地震前兆机理进行了解释。
In this paper, we summarize systematically the existing experimental data, and study crustal rheology of North China by using these data combined with focal depth distributions in this region.
本文系统总结了这些流变实验资料，并应用流变数据结合地震震源深度分布，对华北地壳流变性质进行了研究。
The research result shows the location accuracy by the method is better and improves more than original location result in residual error, evaluated error, epicenter distribution and focal depth.
研究结果初步表明该方法定位精度比较高，无论在残差、测定误差、震中分布还是震源深度方面，都比原来定位结果有较大改进。
Focal depth of laser beam is advanced by diffraction optical element in this paper.
本文使用衍射光学元件来提高激光束的焦深。
This paper puts forward a conception of a non-diffraction structured light (NDSL), which has characteristics such as linear structure, long focal-depth and narrow line-width, etc.
提出了一种无衍射结构光概念，这种光具有线性结构、焦深长、线宽小等特点。
This paper puts forward a conception of a non-diffraction structured light (NDSL), which has characteristics such as linear structure, long focal-depth and narrow line-width, etc.
提出了一种无衍射结构光概念，这种光具有线性结构、焦深长、线宽小等特点。
应用推荐