脉时调制: ptm pulse-time modulationpulse time modulationpulse-time modulation
口气: 1.(说话的感情色彩) tone; note 短语和例子命令口气 an imperative tone of voice; 用恳求的口气 in a pleading tone; 埋怨的口气 a note of complaint; 口气傲慢 take a high tone; 改变口气 change one's note [tone]2.(言外之意) what is act