"边材"是个多义词，它可以指边材（植物木质部的外围活层）,边材（汉词解释）。
If combined with the regression equation of chinese larch sapwood area and diameter, we can figure out the total water consumption of monthly on forest land over the known diameter of standard tree.
结合胸径和边材面积的方程,得出在已知标准木胸径的情况下就能推算出林地的总的月耗水量。
参考来源 - 兴安落叶松树干液流速率及其影响因子的研究Whether gas or liquid, radial or tangential, the permeability of Masson’s pine wood is increasing from heartwood to sap wood.
马尾松木材的渗透性都是从心材向边材逐渐增大。
参考来源 - 马尾松木材高温干燥的水分迁移和热量传递This algorism did not consider the interference from knots to sapwood and heartwood indentification.
但该算法避开了节子对心边材识别的干扰。
参考来源 - 基于CT技术检测木材、竹材结构特征的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
若是车轮的轴销嘎吱作响，或是横梁里掺了边材，或是干草堆斜歪了，村里的所有人都会知道这是谁干的。
If the wheel axle pin squeaked, or the beam had sapwood in it, or the haystack leaned, everyone in the village would know who had done these.
边材易于保存，但是硬材不易保存。
每个生长周期都有一或多层活的边材细胞转变成心材。
One or more layers of living and functional sapwood cells are periodically converted to heartwood.
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