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《林业科学》1981年第3期刊载了《用胸高直径和树高计算中央直径的研究》(以下简称《研究》文)。《林业调查规划》1984年第2期刊载了《关于用胸径和树高计算不同高度处直径形数和形率及近似材积的探讨及其应用》(以下简称《探讨》文)。两篇文章根据相似三角形原理推导出公式和应用试验结果。此外,《林业科学》1982年第4期刊载的《关于
“Forestry Science” in 1981 third issue of “the use of chest diameter and height calculation of the central diameter of the study” (hereinafter referred to as “research”). “Forestry Investigation Plan” 1984 the second issue of “on the use of diameter at breast height and height calculation of diameter at different height and shape of the Probability and Probability Volume of exploration and its application” (hereinafter referred to as the “exploration”). Two articles deduced the formulas and applied test results based on the principle of similar triangles. In addition, “Forestry Science” in 1982 fourth issue of "about