We can find the relationships between relative diameter and relative height, DBH and breast height culm thickness, relative culm length and number of culm by studied the structure of culm form.

通过对梁山慈无性系种群秆形结构的研究，初步掌握了梁山慈相对直径和相对高度的关系、胸径与胸高壁厚的关系、梁山慈相对节间长度和节位数的关系。

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With the increase of relative humidity, both length and diameter of vessel element increased, as well as the frequency of rays.

随着空气相对湿度的增加，导管分子长度和直径均增大，射线频率减小。

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The contributions of wave component of different orders are dependence on the mean diameter, size distribution and relative refractive index of the particles.

且光谱基波分量及低次谐波分量的贡献依赖于粒子直径、标准偏差及相对折射率的大小。

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