激光器从地面上瞄准位于“鹈鹕”下侧的太阳能电池为这架直升机充电，使它开历史之先河，在空中足足盘旋了12小时27分。
The laser, aimed from the ground at photovoltaic cells mounted on the Pelican's underside, charged the chopper's battery, keeping her aloft for an unprecedented 12 hours and 27 minutes.
公司也为黑莓智能手机研发一款特殊的外壳，使之无需电源适配器也能充电。
The firm has also developed special "skins" for Blackberry smart-phones, so that they too can be charged without the need for an adaptor.
介绍一种具有干燥、照明和充电系统的演示实验装置，该装置使平行板电容器在演示时能保持所带电荷基本不变。
A parallel plate condenser with installation of drying air, lighting and charging is provided, which can keep charge numbers constant in demonstration experiment.
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