This class sets the theory basis, next 7 classes are purely "hands-on" full edits. Original versions of all photos are provided - simply download them and follow me along!
这个类设置了理论基础，接下来的7个类都是纯粹的“动手”的全编辑。所有照片的原始版本-简单地下载他们，并跟着我！
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。
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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