吸声sound absorption

1、英译中（Translate）：passive absorption（）

英译中（Translate）：passive absorption（）

2、消声量sound deadening capacity

消声量sound deadening capacity

3、[A] sound

[A] soundA[B] all-roundB[C] entireC[D] whole

4、Bilge soundings indicate（）.

Bilge soundings indicate（）.Athe amount of condensation in the holdBwhether the cargo is leaking or notCwhether the vessel is taking on waterDAll of the above

5、房间吸声量room absorption

房间吸声量room absorption

6、交换吸收 exchange absorption

交换吸收 exchange absorption