研究了起重机载荷摆振模型在简化过程中所产生的相对误差，得到了相对误差公式。
The paper studied the relative error which appear because of abbreviation for the model of crane load sway, the relative error equations are obtained too.
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.
此外，还分析数控模型以及回摆间隙角对加工误差的影响。
Besides, the influence of the machining error by the nc model and the clearance Angle of the sway back are analyzed.
提出了一种带有光线漂移补偿的测量导轨俯仰角误差、偏摆角误差的方法及系统。
A method and system based on compensation for beam drift are put forward in order to measure pitch and yaw errors.
应用线化和校正方法，研究了单摆的非线性振动，作出了周期比和相对误差随摆角的变化曲线。
The vibration of the nonlinear pendulum is studied by means of linearization and correction method, the curves of the period ratio and the relative error is plotted.
利用物理摆原理导出了自动安平水准仪磁致误差的理论函数模型，建立了地磁场中的观测方程。
Based on the theory of horizontal pendulum, the theoretical function model of magnetic error of self adjusting level is deriveted, and observation equation in geomagnetic field is set up.
从实验误差理论角度，分析了沙摆重心变化引起的实验误差，结果表明由重心变化引起的误差相对于其它误差而言在实验中占主要地位。
The experiment error which altering barycenter of sand pendulum brings about is analyzed theoretically. And it is also an important factor comparing with others.
在利用单摆测重力加速度实验中，有复摆、空气浮力、空气阻力、摆角等多种误差因素。
In the experiment of measuring gravity acceleration with a pendulum, a few error factors are existed, such as complex pendulum, air buoyancy, air resistance and initial displacement.
分析了俯仰角、偏摆角的误差分离和实时测量原理。
分析了俯仰角、偏摆角的误差分离和实时测量原理。
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