In view of the complexity of ammonia synthesis, a two-step gradual optimization experiment for increasing the net value of ammonia was designed.

针对合成氨生产的复杂性，以提高氨净值为目标，提出了“两步逐级正交优化”的概念并设计了相关试验方案。

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All LED magnifiers provide a very even illumination of the field of view. The required voltage of 3.6 volt is provided by two batteries (AA or a) via a step-up converter.

所有的LED带灯放大镜都可以提供视场均匀照明，所要求的3 . 6伏电压由两节电池通过一个升压变换器完成。

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All LED magnifiers provide a very even illumination of the field of view. The required voltage of 3.6 volt is provided by two batteries (AA or a) via a step-up converter.

所有的LED带灯放大镜都可以提供视场均匀照明，所要求的3 . 6伏电压由两节电池通过一个升压变换器完成。

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