suprasegmental feature中国知网里有讲解
就是超音段特征 Distingctive features that occur in units larger than sound segments, such as the syllables, words, phrases and sentences, are called suprasegmental features.
又称节律特征、超音段特征、超音质特征、超切分特征。指在连续的语流中超越不止一个音段......语的重音。利用韵律特征构成的音位是非音质音位。也有的学者把大于一个音段的语音结构所表现出来的所有语音特征，如腭化、鼻化都看作韵律特征
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