动力指示 (Power Reserve Indicator) 指示出机械钟表发条余力（发条卷紧的程度）的功能称为动力指示。通常是在表面上开一个扇形窗口，或以指针指示该余量。
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即使切实的奖励是作为对表现优秀的一种指示，他们也会减少对感兴趣的活动的内在的动力。
Even when tangible rewards are offered as indicators of good performance, they typically decrease intrinsic motivation for interesting activities.
它可以自动上弦，具有三问报时、万年历、时差设置以及跳时功能，另外还配有动力储备指示器和双金属温度计——除了MMS彩信功能什么都有的。
It's self winding, has a minute repeater, perpetual calendar, equation of time, jumping hour, power reserve indicator, and a bimetallic thermometer - everything but MMS messaging.
毕竟，指示犬是一种充满活力和动力的犬种，就像野心勃勃的猎犬一样不知疲倦。
After all, Pointers are full of energy and go-power, tireless as hard-driving hunting dogs.
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