With the increase of the ground thickness the fluctuation is reduced progressively to zero.

随着土层厚度增加，这种振荡现象逐渐减弱直至消失。

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With air-formed films the faradaic processes decreased progressively to a constant rate consistent with the increase in potential, indicating the healing of surface flaws.

对于空气氧化膜，电化学反应速度逐步变慢，直至达到相应于稳定钝态的恒定值，同时电位向正移动，表明膜中的微裂纹不断得到修补。

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To eliminate the need for heroic final cleanups, it is expected that the degree of purity of intermediates will increase progressively, from the first intermediate on to the drug substance itself.

为减少最终的大规模清除，从第一个中间体到原料药本身，中间体的纯度应该逐渐提高。

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