树木直径的实际生长年龄小于树木年龄，用树木年龄作为自变量来描述直径生长会导致生长曲线出现拐点。
Description of the tree diameter growth using tree age as independent variable may thus give an inflection point of the growth curve.
树木直径的实际生长年龄小于树木年龄，用树木年龄作为自变量来描述直径生长会导致生长曲线出现拐点。
Description of the tree diameter growth using tree age as independent variable may thus give an inflection point of the growth curve.
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