monophonic

150W定压式音频功率放大，大功率裕量，高可靠性.

150W monophonic constant-voltage audio power amplifier, high-power overmeasure, high reliability.

In fact, the liturgical tradition which the Church has bestowed on us is a vocal, monophonic music composed along with Latin words coming from sacred texts.

教堂传拜歌是一种单旋律音乐加上来自宗教经文拉丁歌词。