This paper introduced a measuring chamberlet method and character for flow-noise in seawater pipe system and analyzed inferior-limited frequency of reverberation of measuring chamberlet.

要介绍了海水管路系统中流噪声的小室测量方法及其特点，分析了测量小室的声场特性及产生混响的下频率。

By deenergizing of coil, the control air actuates the3- way valve( pos. no.29 through the pipe named“ SUPPLY” and the3- way magnet valve( pos. no.73, right frame).

由线圈的断电，控制空气促动三通阀29通过supply管路和三通电磁阀73右位。