n. declinate
misc. angle of difference
... angle of difference 差角 ; 偏移角 the minimum angle ofphase difference 最小相差角 angle of phase difference 差相角 ...
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偏差角 [航] angle of deviation ; drift angle ; deviation angle ; off-set angle
视差角 [天] parallactic angle ; parallactic angle position angle ; angle of parallax ; [天] parallax angle
光行差角 aberration angle ; angle of aberration
翼差角 [航] decalage
垂直循迹误差角 vertical tracking angle error ; vertical tcutting angle error
自差角 angle of deviation
像差角 aberration angle ; angle of disparity
横向循迹误差角 lateral tracking angle error
位差角 shift angle
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。
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.
三角高程测量高差值应进行球差改正。
Elevation difference by trigonometric leveling shall be corrected by spherical aberration.
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