测量断面的平均计数、噪声、冷区对比度及剖面曲线。
The mean counts, noise, contrast and profile curves of the slices were measured.
为了提高测量精确度，减少随机误差，对噪声峰值测量应采用统计平均方法，所以也需要一定的测量时间。
In order to increase the measuring accuracy the sample averaging method must be introduced, so that a certain time of measurement is needed.
本文根据的一个数学定理，对受多个物理白噪声激励的极一般的一个自由度系统导出了随机平均方程。
Based on a theorem due to Hasminskii, a stochastic averaging equation is derived for a general system with one degree of freedom subject to physical white noise excitations.
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