What is the average value that determines the absorptive properties of materials

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试卷: WELL AP模拟题英文A卷[查看]
What is the average value that determines the absorptive properties of materials?
什么决定材料吸声属性的平均值？
A: The sound absorption coefficient (SAC) 吸声系数（SAC）
B: The noise reduction coefficient (NRC) 降噪系数（NRC）
C: The noise absorption coefficient (NAC) 噪音吸收系数（NAC）
D: The sound reduction coefficient (SRC) 减声系数（SRC）

参考答案: B

本题解释:
正确答案：B