这是因为中纬度和高纬度地区的林木线受到积雪存留时间和厚度的强烈影响。

This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover.

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“阵列的整个厚度等于硅线的长度，”阿特沃特提到。

"The entire thickness of the array is the length of the wire," notes Atwater.

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给出了一种线接触弹流问题中油膜厚度的理论计算公式。

A theoretical formula for computing the film thickness in line contact EHL problems is derived.

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