According to the Huang Kun's statistical distribution theory of phonons (1982), the phonon probability factors and the average numbers of phonons at 4.2K and 20K are exactly calculated.
根据黄昆等的声子统计分布理论，计算了4.2K和20K下的多声子跃迁几率因式和发射的平均声子数目。
The theory of statistical dislocation link length distribution is an active field in the modern microscopic quantitative theory of metal plastic deformation.
变形金属位错链长度统计分布理论是现代金属塑性变形定量微观理论最活跃课题之一。
On the basis of statistical theory, the distribution probability of full graded concrete strength and the relation between the sample size and coefficient of variation are introduced.
运用统计学理论给出了全级配混凝土试件强度的概型分布，导出了试验样本容量与变异系数之间的关系式。
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