Zhu was wearing a recently purchased Eiffel Tower baseball cap with blinking battery-powered lights.
朱先生带着一顶才买的埃菲尔铁塔棒球帽，上面还有小灯珠一闪一闪的。
The reclaiming and recycling methods of the reusing resources such as manganese powder? Carbon stick? Copper cap and zinc hull in the waste battery are introduced.
说明了废旧电池的危害，提出了对废旧干电池中锰粉、碳棒、铜帽、锌皮等可再利用资源的回收利用方法。
The properties of nickel plated steel cap were tested. And the electrical properties of nickel plated steel cap and copper cap for battery application were compared.
作者对镀镍钢帽的物理性能进行了测试，并对镀镍钢帽电池和铜帽电池的电性能作了对比试验。
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