Result: at different temperatures, the result of assayings was a downtrend with the time extended.
结果：各温度下，随时间延长含量测定结果呈下降趋势。
Total PAHs content decreased as the time extended, and the rate was rather high at the initial stage, and then slowed down in the rest of time.
三种土壤中菲和芘总量都随着时间的延长而降低，降低速率上呈现出先快后慢的特点。
When the anodization time extended, the pore diameters decreased, while the film thickness increased, but the increase tendency was more and more slower.
随着氧化时间的延长，多孔氧化铝薄膜的孔径逐渐减小，膜厚逐渐增加，但是增加的速度越来越慢。
When the anodization time extended, the pore diameters decreased, while the film thickness increased, but the increase tendency was more and more slower.
随着氧化时间的延长，多孔氧化铝薄膜的孔径逐渐减小，膜厚逐渐增加，但是增加的速度越来越慢。
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