投了篇文章，审了3个月，好歹给了大修，没有白等。
审稿人的其中的一个问题如下：
H2-TPR experiments were carried out with a flow of H2/N2. The use of nitrogen can cause problems, and a flow of H2/Ar is preferred by most researchers. An explanation of the use of N2 instead of Ar must be included.
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