The water-air mixture is drained throughconnection the connection pipeline may be used for drainage, however it must not be lockable.
水-空气的混合液是经接口排泄，这个管路可以用作泄放，但是不能关闭。
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Another important feature is a buffered pass-throughconnection so that you can also pass signal along (without volume control) to a satellite amplifier from the same input channels.
It comprise input line and output line and transfer line which connect input and output. This model simulate those likely faults which emerge in transfer process throughconnection of lines.