For different diffracted wavelengths, there are corresponding different equivalent offset angles. Finally the variation rule of equivalent offset Angle with diffracted wavelength is given.
对于不同数值的衍射波长，有不同的等值偏置角，最后给出了等值偏置角随衍射波长的变化规律。
This paper assumes the rotational angular velocity of a crane according to the experimental sine rule, and derives the nonlinear differential equations of the swing Angle.
本文以实验为依据，假定起重机的旋转角速度按正弦规律变化，推出货重偏摆角的非线性微分方程。
Moreover, the friction angle' s change rule and the reasons of different granules were analyzed and pointed out under the same water ratio.
在此基础上进一步分析了不同粉砂粒含量的土在相同含水率时的摩擦角变化规律及其原因。
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