... ○ 动火证 Fire work permit □ 电工 Electricity work □ 危险化学品操作 Hazardous chemical operation ...
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It seems he used to work for the electricity board at one time.
他好像曾经在电力局工作过。
When the tide rises, water comes through the dam, the turbines turn and the electric generators work, producing electricity.
当潮水上涨时,水流过大坝,涡轮机转动带动发电机工作,就产生了电力。
After two years of hard work, the group paid for the solar panels, which now satisfy one-fourth of the school's electricity needs—saving the neighborhood thousands of dollars.
经过两年的努力,该组织购买了太阳能电池板,现在满足了学校四分之一的电力需求,为社区节省了数千美元。
There are many kinds of work. There's electrical work, take the motor, you plug it into the wall, electricity makes the fan go around, that's electrical work. There's magnetic work.
我们复习一下大一,学过的功的概念:,物体在力的作用下,运动了一段距离。
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