focal depth
震源深度：地震震源的地表以下深度。
常用释义
英式发音
美式发音
基本释义
- 震源深度：地震震源的地表以下深度。
- 焦深：指摄影或成像系统中，能够清晰成像的物体距离范围。
例句
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1·From the epicenter of the distance to the source told focal depth.从震中到震源的距离叫震源深度。
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2·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。
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3·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)。
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4·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。
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5·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。
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6·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。
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7·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。
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8·The major features of this method are: (1) it separates estimations of focal depth and origin time from estimations of epicenter location corrections;此方法的主要特点是：1。震中位置与震源深度、发震时刻分离求解；
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9·Focal depth of the earthquake is the most in 1963 in Indonesia Irian Jaya province in northern waters of the 5.8 earthquake, the focal depth of 786 km.震源深度最深的地震是1963年发生印度尼西亚伊里安查亚省北部海域的5.8级地震，震源深度786公里。
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10·The rupture surface is to NNE, similar to gradient belt of focal depth, gradient belt of crustal deformation, isoseisms and extended direction of earthquakes.伽师强震群的破裂断层面为北东向，与震源深度梯度变化带、地壳接触变形梯度变化带、等烈度线以及地震扩展方向吻合；