Acoustics - Reference zero for the calibration of audiometric equipment - Part 1 : reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones.
声学。测听设备校准用参照区。第1部分：纯音和耳挂式耳机的参考等效阈声压级。
The third emphasizes on the comprehensive design about each department such as architecture, interior design, acoustics, line of sight, equipment, and the rooms pertain to the lecture hall.
着重探讨报告厅内部空间、声学、视线、设备协调综合设计，以及其附属的休息空间、辅助部分的设计。
It adopts the most advanced VOD system and acoustics system and boasts top environment, equipment and service.
采用最先进的点歌系统和音响系统，以一流的环境、一流的设备、一流的服务著称。
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