under bark

The response of wood/ bark properties of red birch seedlings to elevated CO2 ( EC) under low ( LD) and high density ( HD) were investigated in closed top fumigation chambers ( CTC).

研究了高（HD）、低（LD）两个种植密度下红桦幼苗的树皮和去皮树干特征对CO2升高的响应。

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In addition, ecotypic differentiations in leaf area, specific leaf area, bark, height under branch and crown width were found between hilltop and foot gulch in the studied species.

另外，在山顶和山脚调查的几个种群在叶面积、比叶面积、树皮、枝下高和冠幅等方面，均出现了生态型的差异。

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Every year the stem of the oak-tree becomes a little thicker, for a new layer of wood grows all round it just under the bark.

每年，橡树的茎干都会变得更粗，因为树皮之下长出了新的一层木头。

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Some Negroes advanced in a bark under the balloon.

在气球下面有几个黑人划着一只小船.

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All the species collected from forest region, which live under bark, on dead twigs and branches or under leaf litter, feeding on fungal spores.

这些种均采自林区，生活于树木表皮缝隙间或枯死的林木树叶、树皮下取食真菌孢子。

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