Silencer, has conical broader nozzle provided in conical narrower nozzle, where narrower nozzle can also be provided in broader nozzle, and each nozzle is connected with channel
摘要
<p>The silencer has a conical broader nozzle provided in a conical narrower nozzle, where the narrower nozzle can also be provided in the broader nozzle, and each of the nozzles is connected with a channel.</p>
