扬声器材 meaning in English

sound amplifying device

Use of sound amplifying device and broadcasting vans
使用扬声器材及广播车辆
Echo main consultant engineer , dr . mark johnsen is also involved in research of advanced speaker industry . he tends to develop advanced speakers and modern digital home theatre speaker system
“ echo ”总顾问工程师, dr . mark . johnsen亦同时是研究从事民用高级扬声器工业,至力发展高级扬声器及当今数码时代的家庭影院扬声器材