Precision spring(compression/tension/torsion/special-shape/battery spring), USB stainless clockwork spring, copper, iron and aluminum rivet, nail claw/claw pearl, and toy axle.

精密弹簧（压簧、拉簧、扭簧、异形弹簧及电池弹簧等）、USB不锈钢伸缩发条、铜铁铝铆（窝）钉、爪钉/管珠、玩具车轴。

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The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, instrument and meter, electric clock Watch a variety of precision parts.

主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、电镀挂具、仪器仪表、电器钟表等各种精密零件。

youdao

The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, instrument and meter, electric clock Watch a variety of precision parts.

主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、仪器仪表、电器钟表等各种精密零件。

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Without the battery, the spring can power the torch for only three or four minutes.

ECONOMIST: MONITOR

Without the battery, the spring can work the torch for only 3-4 minutes at a time.

ECONOMIST: Clockwork technology

The spring is wound for half a minute, and then unwinds over six minutes, charging a battery in the process, and providing enough energy to run the radio for an hour. (This means the radio's spring-controller circuit is no longer necessary.) Thus, Freeplay has switched from making solely spring-powered devices to making battery-powered devices that are equipped with a clockwork mechanism for recharging and emergency use.

ECONOMIST: Clockwork technology