- single capstan
- 单: singular number fate; destin ...
- 主动轮: drive sprocket; action wheel ...
- 单主动轮磁带机: single capstan tape drive
- 主动轮: drive sprocket; action wheel; capstan; drive pulley; drive wheel◇主动轮轴 drive sprocket axle
- 主动轮，策动轮: drivewheel
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