| 摘要 |
A track and carrier system has a plurality of carriers having an upper surface, a bottom surface, and at least one roller coupled to the bottom surface, wherein the upper surface of the plurality of carriers is shaped such that it has a wide end and a narrow end, the narrow end pointed substantially inwardly of the continuous groove and at least one roller is configured to travel within a continuous groove in a platform so that displacement of one carrier in the plurality of carriers displaces at least one additional carrier in the plurality of carriers about the continuous groove.
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