| 摘要 |
A cord drive has two cords mounted on two spools. Pulling the first cor d unwraps the first cord from the first spool, causes a drive shaft to rotate in one direction, and causes the second cord to wrap onto the second spool. Pulling the second cord unwraps the second cord from the second spool, causes the drive shaft to rotate in the opposite direction, and causes the first cord to wrap onto the first spool.< /SDOAB>
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