采用供气式低压射流曝气系统改良型氧化沟工艺处理制浆造纸中段废水，对整个调试运行过程进行了介绍。

An improved oxidation ditch process using forced air supply low-pressure jet aeration system was used to treat middle-stage wastewater from pulping and papermaking.

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他赞扬amr公司尝试对系统进行彻底的整修，而不是逐步改良。

And he praised AMR for attempting a complete overhaul, rather than incremental improvements.

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所以说，这个研究中心支付了微软系统的研发费用，而微软仅仅支付了这套系统的改良费用。

So Xerox paid for the research; Microsoft paid only for development.

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