| 摘要 |
<p>A drip irrigation pipe includes a drip emitter and a flap that is formed in the pipe wall by first and second grooves. The first groove is longer than the second groove and the flap remains connected to the pipe wall at two bridges. A pivot region of the flap extends between the two bridges and the flap is adapted to twist about the pivot region as liquid exits the pipe at the flap.</p> |
