| 摘要 |
<p>A flexible plastic water tube (13) which can be stored on a roll has a flexible but substantially inextensible line member (17) attached to it and can include a number of pre-attached drippers. The tube can be stretched between spaced apart supports (11, 12) with the line member preventing undesirable sagging. The tube can therefore be made from inexpensive thin walled plastic.</p> |
