探讨采用高密度超短轮伐期栽培技术种植的一年树龄中林杨全树带皮材，NSSC法制浆及生产新闻纸的可行性。
The feasibility of making newspaper with NSSC pulping by using one-year-old zhonglin aspens which was cultivatel in high density in supershort cutting period was studied.
鹿砦，鹿角栅，铁丝网：用伐倒的树木排成的防御障碍，带枝杈的树端相互迭放面向敌人，有时也将枝杈削尖。
A defensive obstacle made by laying felled trees on top of each other with branches, sometimes sharpened, facing the enemy.
鹿砦，鹿角栅，铁丝网：用伐倒的树木排成的防御障碍，带枝杈的树端相互迭放面向敌人，有时也将枝杈削尖。
A defensive obstacle made by laying felled trees on top of each other with branches, sometimes sharpened, facing the enemy.
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