| 摘要 |
An apparatus for sorting fragile objects has a grading structure connected to a base. The grading structure is movable in first and second substantially horizontal directions with respect to the base. A displacement mechanism imparts reciprocating, substantially horizontal movement of predetermined frequency and amplitude to at least part of the grading structure to thereby move the objects in the first substantially horizontal direction along the grading structure. A displacement controller variably controls the frequency and amplitude of the reciprocating horizontal movement. The frequency of movement in the first substantially horizontal direction is controlled independently of the frequency of movement in the second substantially horizontal direction.
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