The volume of recycle stock per volume of fresh feed. Sometimes expressed as the volume of recycle divided by the total charge.

循环料体积与新鲜进料体积之比。有时是循环料体积与总进料体积之比。

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The effect of feed properties such as heavy aromatic content of fresh feed and recycle ratio on the cracking characteristics was also...

原料油性质对反应动力学的影响分别从新鲜原料油重芳烃含量和回炼比两方面考虑。

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But what's novel about the CEAC design is that it incorporates a bio-regenerative life-support system -- the kind of technology that could one day not only feed an outpost on the moon or Mars, but also provide it with oxygen and recycle its water.

CNN: To boldly grow where no one has grown before