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.
差分后形成的大型七对角线性方程组，可采用逐次线松弛方法迭代求解。
Line Successive Over Relaxation (LSOR) can be used as one method to calculate the equation.
在单脉冲雷达中，和差通道接收机的幅度和相位影响单脉冲雷达的测角精度。
In monopulse radars, the amplitude and phase of sum and difference channels have influence over Angle measurement accuracy.
此法提供了一个直接而简便的解法，显示了用力法平差量边三角网的优点。
It offers a direct and simple solution and shows the advantage of using this method for adjusting trilateral nets.
每个房间的四个角水平差均有1 - 3公分的高低差距。
Each of the four rooms have poor levels of 1-3 centimeters high gap.
本文介绍了三角网按方向条件观测平差的电算程序中，应用极坐标条件式的新方法。
In the adjustment program of triangulation net by directional condition observation, to apply the formulas of polar coordinate condition is a new way.
本文讨论了一类在无结构三角网上数值求解二维热传导方程的有限差分区域分解算法。
In this paper, a finite difference domain decomposition algorithm on an unstructured triangular mesh for numerically solving the two-dimensional heat equation is studied.
提出了一种利用平面解三角，并结合辐射源信号到达方向和脉冲到达时间差对运动辐射源进行单站无源定位的算法。
An algorithm used trigonometry to passively locating a moving emitter with direction of arrival (DOA) and time difference of arrival (TDOA) of the emitter signal is given.
以非均质各向同性渗流模型仿真地下水流，用不规则三角网格有限差分法求解三维数值仿真模型。
The groundwater flow is simulated with the seepage model of heterogeneity isotrope, and the partial differential equations are solved with finite difference scheme of irregular triangle net.
文章给出了三角网格上二阶椭圆问题广义差分方法的一种新的误差估计方法。
In this paper, a new method of error estimate for the generalized difference method of second order elliptic problems on triangle grids is given.
研究了半锥角和液膜破碎前长度随液压差的变化规律。
The variations of nozzle liquid pressure on half-cone angle and breakup length have been analyzed.
大陆上的现有三角测量系统还须平差。
Existing continental triangulation systems also still need to be adjusted.
具体分析推导了光线入射角变化对这种新型的可调横向剪切量萨伐尔偏光镜的光程差、偏振度以及对系统干涉条纹的影响；
The effect of the incident angle on the optical path difference, state of polarization and interference fringes of the system is deduced in detail.
分析了角锥棱镜的制造角差、面形误差和测量过程中角锥棱镜的偏摆、俯仰、滚转对直线度测量的影响。
The effects on straightness measurement are analyzed for the cube-corner retroreflector with angle errors, surface errors, yaw, pitch and roll.
简要叙述高分辨率卫星遥感影像的严格几何模型，建立影像姿态角常差检校模型。
The rigorous geometric model based on the collinearity equations is the basic model for object positioning of high resolution remotely sensed imagery.
由于谐振网络的品质因数比较低，以往常角的基波近似分析法准确性差。
Since the Q of the resonant network in often low, the analysis in the form of fundamental sinusoidal approximation is not accurate enough.
举例说明了具有奇异协方差阵观测值的三角网平差和相关分组平差的实施。
The practical applications of these methods are illustrated by taking triangulation adjustment and that of correlated observations in groups as examples.
三个接收天线（接收闪电放电辐射的超高频脉冲）分别放在一个垂直边长为120米的直角等腰三角形的顶点，由到达天线的时间差来计算接收到的闪电脉冲的方向。
The three antennas which receive VHF impulses emitted by a lightning discharge are placed on the vertices of a right-angled isosceles triangle with perpendicular sides 120 meters in length.
本程序适用于三角网、边角混合网的平差计算，适应性强，运算也较方便。
The new method, which is both adaptable and convenient, may be used in triangulation adjustment, and triangulateration adjustment as well.
计算结果表明，轴向预紧力随锥角或锥角差的增大而增大，密封系统承载内压能力随之下降。
The results obtained by FEM calculation indicate that the axial preloading force increases and the power of supporting inside pressure declines with the increase of taper or difference of taper.
采用差分方法计算旋涡流场，进而分析三角翼上前缘分离涡的运动特点及其破碎机理。
The vortex flow field is calculated with difference methods, and the motion characteristics and the bursting mechanism of the leading-edge separated vortices of delta wing are analyzed.
本文介绍一个三角网坐标平差的BASIC程序。
This paper introduces a BASIC program for coordinate adjustment of tri an gulation net.
控制石炭二叠系两类三角洲发育的主要是河流类型、地形坡度、水体深浅、不同水体密度差及河流沉积作用和湖泊的分散作用等。
The two kinds of deltas are controlled by river types, ground slope, water depth, water density differentia, river sedimentation and lake dispersion.
针对毫米波末制导雷达角跟踪精度差的问题，提出基于频域高分辨像的单脉冲测角算法。
Designed for the lower Angle precision of the MMW terminal guidance radar in angular tracking, the new algorithm based on high frequency resolution profile is proposed in this paper.
渤中34北区浅层主要为河控三角洲沉积，储层横向连续性差，断裂发育，构造复杂。
In the northern BZ34 block, the shallow sediments are mainly formed in a fluvial delta, with reservoir poor continuous laterally, faults well developed and structures complicated.
渤中34北区浅层主要为河控三角洲沉积，储层横向连续性差，断裂发育，构造复杂。
In the northern BZ34 block, the shallow sediments are mainly formed in a fluvial delta, with reservoir poor continuous laterally, faults well developed and structures complicated.
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