| 摘要 |
<p>The dosing device (1) has a housing (3, 5, 7), in which there is a boring (35) through which the liquid flows. Part of this boring is in the form of widening produced by stamping or pressing using a stamping tool pressing against the wall of the boring to produce the widening. The widening is extended one to cool required shape for the intended flow resistance.</p> |
