Once the relative content of the compound with the characteristics of the group, changes, the absorption coefficient will surely change. Hence the problem of choice of standard oil has to be faced.
一旦具有该特性基团的化合物的相对含量发生变化，吸收系数必然相应变化，所以都存在“标准油”的选择问题。
Once the relative content of the compound with the characteristics of the group, changes, the absorption coefficient will surely change. Hence the problem of choice of standard oil has to be faced.
一旦具有该特性基团的化合物的相对含量发生变化，吸收系数必然相应变化，所以都存在“标准油”的选择问题。
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