| 摘要 |
An insect trap having a cylindrical tubular body with a top end and a bottom end and an oval flexible flapper removably mounted in regions adjacent the bottom end whereby the peripheral edge of the flapper is in contact with the inside surface of the body for the condition of no air blowing down the body and the peripheral edge of the flapper spaced from the inside surface of the body for the condition of air blowing down the body. |
