| 摘要 |
<p>The plate has a suction chamber (10) including two longitudinal sides (11, 11'), two transverse sides (12), a suction port (13), and a suction opening (14) directed towards subsoil. A suction lip blank (20) fits into a U-shaped cross-section of the suction chamber such that a leading suction lip and a trailing suction lip protrude opposingly from the suction opening. Longitudinal side surfaces (22, 22') are formed, so that the leading and trailing suction lips are connected via a central portion (23). An opening (21) of the blank and the suction port are arranged to form a common passage.</p> |
