Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of the Society of Petroleum Engineers is prohibited.

本文的任何部分以商业为目的在未经过石油工程师学会的同意下电子复制，分发，或储存是禁止的。

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All rights reserved, including those of reproduction and storage in electronic media. The commercial use of the content shown in this product, in particular for training, is not allowed.

保留所有权利，包括生殖和存储在电子媒体。商业使用的内容显示在该产品，特别是对于培训，是不允许的。

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This thesis mainly studies the reproduction of recovery chain of electronic waste in China based on the theory of circular economy.

本文主要研究基于循环经济理论我国电子废弃物回收产业链的再造问题。

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Both iLoud models provide highly accurate reproduction of a wide range of musical styles from rock, hip-hop and electronic dance music, to more nuanced and sonically demanding genres like classical and acoustic.

ENGADGET: IK Multimedia outs iLoud and iLoud Mini speakers, supplies mobile jam sessions