| 摘要 |
<p>The device (10) has a pipe (20) for inflow and reflux which is fixed in a fixing device. The pipe has a diameter (d1) larger than the other pipe (30) which has a smaller diameter (d2). The pipe with the smaller diameter is coaxially arranged in the pipe with the larger diameter. The pipe with smaller diameter is longer than the pipe with larger diameter. An independent claim is included for application of device.</p> |
