蕴含音变 ,指一种音变必然引起另外的音变。“AABB”的三种音变“A”读轻声、“BB”变阴平调和后“B”儿化就是蕴含音变 :后“B”儿化蕴涵“BB”变阴平调 ;“BB”变阴平调蕴涵后“A”读轻声。也就是说 ,如果“AABB”的“BB”变阴平调了 ,那么“AABB”的后“A”一定能够读轻声 , Contains sound changes, refers to a kind of sound inevitably cause another sound change. The “A” of “AABB” read softly, “BB” flattened and flattened, and “B” melted contains the sound change: “B” implies “BB” After adjusting implication “A” read softly. In other words, if “BB” of “AABB” is flattened, the latter “A” of “AABB” must be able to read softly,