Experiments indicate that the ammonia catalyst reduced under low or ambient pressure is more active at lower temperature and stable in performance.

通过实验测定表明：合成氨催化剂在常压、低压下进行还原，可达到低温活性高、稳定性好的效果。

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Experiments indicate that the ammonia catalyst reduced under low or ambient pressure is more active at lower temperature and stable in performance.

通过实验测定表明：合成氨催化剂在常压、低压下进行还原，可达到低温活性高、稳定性好的效果。

youdao