近代语音史上轻唇化音变的纠葛与《蒙古字韵》中的“明、微”声母

On the Dispute of Dentilabialization of Classical Chinese in Song(宋)and Yuan(元)Dynasty and Initials Ming(明)Wei(微)in Menggu Ziyun(蒙古字韵)

《切韵》"东三钟微虞废文元阳尤凡"十韵的唇音字发生了轻唇化音变,而其中东三和尤韵的唇音次浊字"梦目谋"等今读m声母,形成两个例外。但这几个字在《蒙古字韵》中标作轻唇音微母,我们认为这些字并没有发生轻唇化音变,其之所以标为轻唇音微母,这是遵循等韵门法的规则要求。

Words with labials and rhymes in rhymes DongⅢ(东三),Zhong(钟),Wei(微),Yu(虞),Fei(废),Wen(文),Yuan(元),Yang(阳),You(尤),Fan(凡)in Qieyun(切韵)have experienced dentilabialization with the exception of nasal words with rhymes DongⅢ(东三)and You(尤)still retaining the labial nasal[m]in Modern Chinese,such as Meng(梦),Mu(目)and Mou(谋).But these three words are with initials of dentilabials in Menggu Ziyun(蒙古字韵).I think initials of these words have not experienced dentilabialization,and the initials are written as dentilabials because of obeying rules of divisions and rhymes.