crown height

常见例句

双语例句

• Its occurence is relative to topography, relief, wind, vertical crown height and stand type.
  其发生与地形地势、风、树冠垂直高度、林分因子有关。
• The "crown diameter-crown height" correlation equations and the formulas of three-dimensional vegetation quantity of tree crown are established.
  建立常见绿化树种“冠径—冠高”相关方程和树冠绿化三维量计算公式。
• The gross flowers and height, diameter, crown width, crown height, crown surface of Chinese fir clones in Guangxi area were investigated by genetic correlation analysis and path-coefficient analysis.
  对广西杉木无性系的总花量与树高、胸径、冠幅、冠高、树冠表面积进行了遗传相关及通径分析分析表明：总花量与生长性状之间的遗传相关系数均为负值；
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