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大家在搜： Jeffrey pine Pinus thunbergii Republic of Botswana maori hen wood hen Prumnopitys taxifolia matai Japanese black pine black pine supers

Pinus nigra

网络欧洲黑松;南欧黑松

Pinus nigra

Pinus nigra

双语例句

1

The best-fit regression equation was set up for seedlings height , stem diameter and root growth of Pinus nigra through the method of stepwise regression .

苗高生长量与侧根鲜重关系最密切，地径生长量受根系鲜重影响最大。应用逐步回归法建立了苗高、地径生长量与根系生长关系的最优回归方程。

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