Since 1976, we have determined the purification effects of air pollution by three structures, namely, forest-belt, hedgerow and scattered tree planted in Shaoxing Iron and Steel Factory.
自1976年以来，我们对绍兴钢铁厂设置的林带、绿篱、散生树三种结构的空气净化效应进行了测定研究。
After an hour of hiking we hit a big blow-down area, with tree trunks scattered like pick-up sticks across the trail.
步行了一小时之后，我们来到了一个大树倒地的地方，横倒的树干像游戏棒一样散落在小道上。
There were about half-a-dozen of them on that one heavy branch, and there were many other birds, scattered all over the tree, taking their morning bath.
在那个粗树枝上，大约有半打乌鸦，还有很多别的鸟儿，散栖在树上，各自做着晨浴。
Using the tree method partitions the unordered point data, so the geometric model of the scattered data is generated.
并通过树形的空间结构完成对密集散乱点群空间分割，由此实现对散乱点群数据的几何分割。
Using the tree method partitions the unordered point data, so the geometric model of the scattered data is generated.
并通过树形的空间结构完成对密集散乱点群空间分割，由此实现对散乱点群数据的几何分割。
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