The active pulsing air separation is a new method for dry material classification, which is specially suitable for electronic scraps disposal and re-utilization.

主动脉动气流分选是一种新的干法分选方法，尤其适合于电子废弃物的处理与资源化利用过程。

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And when I got out of my car, the air was pulsing.

我下车后，空气像脉动般流淌。

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Some of the rarest days of the year come in the September season-days when it is comfortably cold but pulsing with life, when the sky is clear and clean, the air crisp, the wind free of dust.

玄月给我们带来了一年中最可贵的年光：晴空万里，天高气爽，清风徐来，一干二净，生命与季节一路脉动。

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Peeps, tweets and staccato whistles fill the air, a pulsing undercurrent in the tropical night.

NPR: Alarm Over Vanishing Frogs In The Caribbean