Bombardments of such density will destroy any defensive works built by the enemy. 这样大密度的轰炸会摧毁敌人的所有防御工事。
The accumulation speed of soil nutrients in higher density stands was higher while low density stands had negtive effect on the nutrient accumalation. 较大密度的林分林地土壤养分的累积速度较快，而较小密度林分不利于土壤养分的累积。
