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普通话有／n／和／η／两种鼻尾．带鼻尾的零声母音节用（V）VN表示．有8种（V）Vn，8种（V）Vη．本研究用的实验材料是由15位男人念的带声调的所有（V）VN音节．本实验看到，（V）VN中元音部分终点的舌位不仅受到／n／和／η／不同发育部位的逆向协同发音作用，而且受到（V）V中不同主要元音的顺向协同发音作用。普通话跟英语等语言一样，鼻辅音前面元音共振峰过渡是区分／n／和/η／的最重要依据．根据（V）VN中（V）V终点或／和起点共振峰频率，可以把其（V）V在一定程度上跟其在共振峰模式相似的单元音，或复合元音加以区分．本实验还看到，（V）V和N的时长都受到声调的协同发音作用．上声使（V）V最长，阳平的次之，阴平和去声的最短；阴平，阳平和上声的／n／和／η／时长大致相同，它们都比去声的长；上声使（V）VN最长，去声的最短，阳平比阴平的长．本实验还看到，鼻韵尾时长以及（V）V／N的时长比值与其前面主要元音为低的和非低的特征有关．
Mandarin has / n / and / η / two kinds of nose tail. The zero-pitch vowel with nasal tail is denoted by (V) VN. There are eight kinds of (V) Vn, eight kinds of (V) Vη. The experimental material used for this study was all vocalised VN vocalizations read by 15 men. This experiment shows that the vowel of the end of the vowel part of (V) VN is not only affected by the reverse synergistic pronunciation of / n / and / η / different development sites, but also by the forward synergism of different major vowels in (V) V Pronunciation effect. Mandarin, like English, is the most important basis for distinguishing between / n / and / η / as the vowel formant transition in front of nasal consonants. V (V) V can be differentiated to some extent from its vowel or compound vowel whose formant pattern is based on (V) VN in (V) V end point or / and start formant frequency. The experiment also shows that the duration of (V) V and N is affected by the synergistic pronunciation of tones. On the sound so that the (V) V longest, followed by Yang Ping, Yin Ping and sound the shortest; Yin Ping, Yang Ping and the sound of the / n / and / η / duration are the same, The (V) VN longest, the shortest sound, yangping longer than the shade. It has also been observed in this experiment that the length of the nasal rhyme and the ratio of the V / N duration are related to the low and non-low features of the preceding vowel.