| 摘要 |
Regulating device for the lower discharge opening of a livestock feed trough, which comprises an annular body with a similar cross-section to that of the mouth of the trough, which can be telescopically attached thereto; a vertical rod, which is solidly joined to said annular body; and a means of actuation that acts on the vertical rod, which can be moved vertically by said means of actuation, dragging with it the annular body and thus altering the effective length of the trough.
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