Mecanum声学测试舱 Diffuse field sound absorption and transmission loss test chamber 小型扩散场声吸收和传递损失测试舱，遵循ASTM C423、ISO 354和ISO15186测试标准。 Mecanum的声学测试舱是快速测试小尺寸样品的
高流量流阻测试与分析仪（HF SIGMA：High Airflow Resistance Meter）The high airflow resistance meter (HF SIGMA) is designed to obtain reliable measurements of the airflow resistance, normalized resistance, resistivity, and viscous permeability in function of flow velocit
