| 摘要 |
A hose (10) for distributing liquid to plants is made of an envelope of synthetic plastics sheet material, opposite facing inner surfaces of which are welded one to another in a repeat pattern longitudinally of the envelope to provide a longitudinally extending primary passageway (11), a plurality of outlet chambers (14) arranged end to end longitudinally of the hose (10), a longitudinally extending intermediate passageway (13) extending between the primary passageway (11) and the outlet chambers (14) and a plurality of further intermediate chambers (12) arranged end to end longitudinally of the hose and located between the primary passageway (11) and the longitudinally extending intermediate passageway (13), there being a plurality of inlets (16, 16' and 16") in the intermediate passageways (12, 13) and the outlet chambers (14) permitting liquid to flow from the primary passageways (11) through the intermediate passageways (12, 13), at progressively decreasing pressure, to the outlet chambers (14) from which the liquid issues through outlets (19). |
