2019年分类索引

<正>(声学分类:43.05历史;43.10总类;43.15标准;43.20一般线性声学;43.25非线性声学;强声学;43.28航空声学;大气声学;43.30水声学;43.35超声学,量子声学及声的物理效应;43.38换能器;声音的产生与复制设备;43.40机械振动和冲击;43.50噪声:影响和控制;43.55建筑声学;43.58声学测量与仪器;43.60声信号处理,声全息技术;43.64生理声学;43.66心理声学;43.70言语产生;43.71语言知觉;43.72语言处理与通信系统;43.75音乐与乐器;43.80生物声学;43.90声学其它学科.)