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遮光指数
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     Service Quality Index
     服务质量指数
     Index number for atmospheric pollution
     大气污染指数
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     Weaving Process of Shade Cloth
     遮光窗帘织物的织造工艺
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     The program written in Delphi can give the trend of parameters such as percent area coved by wear particles and severity index of wear etc.
     上位机处理程序采用Delphi编程,能够分析遮光面积、磨损指数等参数的发展趋势。
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By using A value method and R value method the size structure of Larix kaempferi (Lamb.) carr. population and the distribution patlerns of different grade trees were studied.The results showed that the trees of the frist and the second grade distributed uniformly,that those of the third grade distributed stochadtically,and that those of the fourth and the fifth grade both distributed contagiously.Further discussion indicated that the growth condition of different trees were greatly relevant to the sunlight...

By using A value method and R value method the size structure of Larix kaempferi (Lamb.) carr. population and the distribution patlerns of different grade trees were studied.The results showed that the trees of the frist and the second grade distributed uniformly,that those of the third grade distributed stochadtically,and that those of the fourth and the fifth grade both distributed contagiously.Further discussion indicated that the growth condition of different trees were greatly relevant to the sunlight condition they received.The more they were shaded,the more their growth were limited.

用A值法和R值法研究了日本落叶松林的种群结构和不同生长级林木的分布格局。两种分析结果表明,该区日本落叶松林已处于分化状态:Ⅰ级木和Ⅱ级木个体之间相互排斥,呈均匀分布状态;Ⅲ级木之间关系不太明显,在Ⅰ,Ⅱ级木之间呈随机分布状态;Ⅳ,Ⅴ级木在林冠空隙中呈集群分布状态。各级林木个体,随着遮光指数的增加,其树高、冠幅、胸径和年轮宽度相应减少,导致林木个体生长发育受到抑制。

 
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