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测定CH4的拉曼光谱时出现2个特征峰2917CM－1和3020CM－1,这是由于CH4分子中4个C?H键不等价造成的.该文中还讨论了其归属.“,”Two characteristic Raman peaks of methane at 2917 and 3020cm??-1? were measured.The results show that the four C?H bonds of methane molecular are unequal.The assignment of Raman bands at 2917 and 3020cm??-1? was discussed in this paper.??