2) root diameter class
根径级
3) diameter of root system
根系直径
4) third-class root
3级根系
1.
A geometric calculation method was designed to calculate surface area of its root system by determining diameters of its second-class and third-class roots,separately.
4 m2,3级根系面积是2级根系的22。
5) root classification
根系分级
6) roots average diameter
根系平均直径
补充资料：径径
1.不停貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条