| 摘要 |
<p>The fine filter structure has an extraction filter unit (3) with an upper frame main body (31) which has a hollow central portion and a coarse strainer (33) which is placed over an upper side of the upper frame main body. A stator (35) is provided with a lower end with a length of 2 centimeter. The strainer is provided with a channel. An upper end of the stator is formed with a through opening (353). Another extraction filter unit (4) is provided with a lower frame main body (41) with a hollow central section.</p> |
