标示杆弹簧
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indicator spring pin 标示杆弹簧销
hour indicator spring driver 时指示器传动簧
spring indicator 弹簧指示器
indicator scale spring 示功器弹簧
indicator clutch spring 指示器离合簧
indicator spring
指示器春天
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Another innovation: a torque indicator showing how many hours of power were left before the spring would have to be rewound.
FORBES: Magazine Article
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