毛竹集约经营未改变各类有机碳的剖面变化特征。

The profile distribution of different fractions of organic carbon were not altered by intensive practice.

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线轮廓度-是条件允许量相同的剖面变化，醚单边或双边，沿着一条线元素的特征。

Profile of a line - is the condition permitting a uniform amount of profile variation, ether unilaterally or bilaterally, along a line element of a feature.

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从此观点出发，导出以二层电性剖面为特征的台站正常地电阻率相对似年变化幅度公式。

From this model section, a formula is obtained for calculating the amplitude of relative apparent annual variation of resistivity at a station characterized by two resistivity layers.

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