element content variation
element content variation
元素含量变化
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The content of element rises slightly in vertical from deep to shallow location, with a circle variation of high-low-high-low or low-high-low-high.
元素的含量在垂向上由深到浅呈现轻微的上升趋势，呈高—低—高—低或低—高—低—高波动式循环变化；
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