| 摘要 |
An electrical circuitry for coordinating the movement of a continuous and repetitive series of advertising display items with an audible program having therein a prerecorded commentary relative to the display items wherein a movable display apparatus is operably connected to an audible system through the electrical circuitry, and the audible system includes a magnetic tape having sensor tapes affixed thereto which coact with relays in the electrical circuit to coordinate the movement of the apparatus to the movement of the magnetic tape.
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