This paper describes briefly the acousticalquality of Jilin gymnasium for ice skating activities, and acoustic measurements of perforated panel of g.
本文介绍吉林滑冰馆音质设计、穿孔玻璃钢板声学测试和玻璃钢吸声体的应用。
2
Objective: To research the acousticalquality of gastrointestinal contents and the attenuation criterion of ultrasound passing through gastrointestinal contents.
目的：探索胃肠内容物的声学特性及超声波经过胃肠内容物的衰减规律。
3
Creating a favorable acoustical environment is an aspect to improve building quality and living amenity, and also a new concept cognized and emphasized by the owners.