本论文所建立的模型已经达到了预期的效果，并可以在理论上指导果树栽培，在实际应用中具有重要的实用价值。
In this paper, the model established has obtained the expected result and has important instructive meaning to pomiculture in theory, meanwhile also has important practical value.
生长模型是定量研究果树干周生长过程的有效手段。
Growth model was an efficient way to study the growth process of some factors of plants quantitatively.
在开始制作的这个模型前，我从苹果树上收集了许多弯曲的木料。
Before starting construction of this model I collected many compass timbers from Aplle wood.
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