The light is dying, for one thing, as Earth’s orbit around the sun and tilt on its axis combine to carry us in this hemisphere further away from receiving the sun’s rays most directly.
光线也在是失去活力，首先，由于地球绕着太阳的轨道，由于地球倾斜的轴线与我们所处的北半球相结合，最直接从太阳所接收到的光线，就愈为遥远。
Spherical Aberration — causes light rays passing through a lens (or reflected from a mirror) at different distances from the optical center to come to focus at different points on the axis.
球差-使以不同孔径角穿过透镜(或从镜面上发射)的光线不能聚焦在轴上的同一点。
Spherical Aberration -- causes light rays passing through a lens (or reflected from a mirror) at different distances from the optical center to come to focus at different points on the axis.
球差-使以不同孔径角穿过透镜（或从镜面上发射）的光线不能聚焦在轴上的同一点。
In this paper, Based on diffracted wave diffusion theory another analysis method about the condition keeping reconstructed image separate from backdrop light for off axis hologram is given.
本文从衍射波扩散出发，提出了另一种分析离轴型全息图再现象与背景光分离条件的方法。
On the basis of theories of physics, geometrical optics and photometry, the optical properties of collimated light beam incident upon single fiber perpendicular to the fiber axis are studied.
结合物理学的基本原理和几何光学的基本规律以及光度学的基础理论等三方面，研究了单纤维在平行均匀光束垂轴入射时的光学性质。
The diffracted light intensity on axis of a Spatial light Modulator (SLM) with Multi-level Phase Fresnel Zone Plate (MPFZP) is studied by diffraction optical method.
用衍射光学方法研究了加有多级相位菲涅尔波带片(MPFZP)的空间光调制器(SLM)的轴上衍射光强。
A curvaceous "Wave Wall" lets light and movement into the interior south Arcade while coalescing to create a grand south-facing stair, moving upwards and on axis with the new Ferris Wheel.
如波浪般起伏的墙壁将自然光和流动感引入室内拱廊街道，也蜿蜒交汇，形成了一个面向南方的巨大楼梯，与新建的摩天轮一起形成了新的轴线。
The light propagating along the axis of the fiber incident on the angled end will be totally reflected and diffracted.
沿光纤光轴传输到光纤倾斜端面上的光将被全反射，同时被光栅衍射。
Move with the X axis micrometric movement the sharp shadow, till the digital comparator red light is on the zero right position.
微调移动X轴接近“十”字比较尺，直到数字比较器的指示灯在零点右边变亮。
On the other hand, an on-axis fill light might be too restricting, and has a higher chance of producing direct reflections off the subject.
另一方面，一个上填充光可能太的限制，有更高的几率产生直接反映了这个话题。
The on-axis intensity distribution was investigated in the focal region of partially coherent light focused by an annular lens.
从理论上研究部分相干光被一环形透镜聚焦，在焦点附近的轴上点的光强分布。
The fanning of the primary bundle of light beams (411) is achieved by refraction on rotationally symmetric interfaces (471, 472), which are variably inclined in relation to the optical axis (417).
所述初级光束（411）的发 散通过在多个以不同角度朝所述光轴（417）倾斜的旋转对称界面（471，472） 上发生折射而实现。
The fanning of the primary bundle of light beams (411) is achieved by refraction on rotationally symmetric interfaces (471, 472), which are variably inclined in relation to the optical axis (417).
所述初级光束（411）的发 散通过在多个以不同角度朝所述光轴（417）倾斜的旋转对称界面（471，472） 上发生折射而实现。
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