This paper presents the commecial test results of the FCC unit in Jiu-jiang Refinery by shifting the total recycle operation to once-through operation.

文中介绍了九江炼油厂催化裂化装置将全回炼操作改为单程催化裂化操作的工业试验。

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If undo is implemented correctly, then there's only one destructive operation in the entire system: emptying the Recycle Bin.

如果恢复功能实现正确，整个系统只会有一个破坏性的操作：清空垃圾箱。

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Circular economy is an economic operation mode according to the norms of Reduction, Reuse and Recycle.

循环经济是以减量化、再使用和资源化为准则的经济运行模式。

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