| 摘要 |
<p>An irrigation dripper (l0) has a screw threaded shank (l2) terminating in a head (l4). The shank (l2) is tapered and has an axially extending groove or slit (l8) along its entire length. Helical screw threads (l6) are formed on the shank (l2) which in use is fitted in a hole formed in a pipe (26). Water from the pipe (26) is discharged through the slit (l8) for irrigating plants.</p> |
