当射线源比较弱、探测器探测效率低时，常常显示出统计起伏的现象。
The statistical fluctuation phenomenon will appear when the radiation source is relatively weak or the sensitivity of the detector is low.
为了克服自然伽马测井时，由于统计起伏所造成的测量曲线重复性误差而设计制造HB97型测井仪。
HB97 bigger crystal nature gamma logging tool is designed for overcoming logging curve repeating errors due to statistical variation.
本文介绍了用阶乘矩能够消除统计起伏，证明引入累积变量后可使粒子数的分布变得均匀；给出了消除粒子间关联效应的方。
The method of removing statistics fluctuation with factorial moment was introduce and the cumulant variable able to even for distribution of multiparticle production was proved.
针对强起伏区面积统计误差，提出一种地形强烈起伏区的面积统计误差的改进方法，并扼要说明它们的一些应用领域。
Aiming at the error in intense hypsography terrain area statistic, the paper puts forward an improved statistic method for intense hypsography terrain, and introduces their application fields.
我们系统地研究了激光在湍流大气中的光强起伏与光斑统计特征。
The statistical characteristics of the laser log-intensity fluctuation and beam pattern in a turbulent atmosphere were studied systematically.
无线遥测电波在海浪环境传播时不同于陆地，海浪的表面起伏不平，表现为一定的统计规律。
Radio propagation in ocean wireless channel is different from the way in land. The ocean surface is roughness which is conformed to some statistical law.
无线遥测电波在海浪环境传播时不同于陆地，海浪的表面起伏不平，表现为一定的统计规律。
Radio propagation in ocean wireless channel is different from the way in land. The ocean surface is roughness which is conformed to some statistical law.
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