2) juvenile wood
幼龄材
1.
The results shows that, expect for the yield of pulp, juvenile wood of improved plantation have better pulping performance than ripe wood of general plantation on the tearing resistance, bursting strength, tensile strength and brightness.
采用经过多年度多重复选择改良的良种马尾松幼龄材与一般马尾松成熟材进行造纸性能比较研究。
3) Corewood proportion
幼龄材含量
4) improving the young bamboo stands to grow
幼林成材
5) mature wood
成熟材
1.
Mechanical properties of juvenile and mature wood of Pinus densiflora from plantations;
人工林赤松幼龄材与成熟材力学性质的比较
2.
In order to find out the difference between juvenile and mature wood of Populus simonii×P.
以小黑杨幼龄材和成熟材为研究对象,分析比较其化学组成、纤维形态和制浆性能。
3.
In this paper,the density of the juvenile and mature wood of Chinese fir plantations of 32-year-old was determined in Changlinggang forest farm located in Jianshi county,Hubei Province.
测定和比较了长岭岗林场 3 2a生杉木人工林的幼龄材和成熟材的密度 。
6) young growth of timber forest
用材林幼龄林
补充资料：重到毓材宅有感
【诗文】：
欲入中门泪满巾，庭花无主两回春。
轩窗帘幕皆依旧，只是堂前欠一人。
【注释】：
【出处】：
全唐诗
欲入中门泪满巾，庭花无主两回春。
轩窗帘幕皆依旧，只是堂前欠一人。
【注释】：
【出处】：
全唐诗
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