Because the source of the energy stops, the electrical current stops -just as a light bulb turns off when you switch off the electricity running to it.
因为一旦能量的来源被切断了，电流就会被切断——就好像当你关上开关，切断电流的时候，灯泡会立刻熄灭一样。
Because the source of the energy stops, the electrical current stops - just as a light bulb turns off when you switch off the electricity running to it.
因为一旦能量的来源被切断了，电流就会被切断——就好像当你关上开关，切断电流的时候，灯泡会立刻熄灭一样。
Typical smart meter designs include periodic transmission of current, phase, and frequency data from the user to the electricity distribution company.
典型的智能度量设计包括来用户端的电流、相位和频率数据向电力调配公司的周期传送。
It stands to lose over 70 percent of its current electricity supply when South Africa, recently beset by power shortages, halts energy exports to Botswana by 2013.
如果最近遭遇了电力短缺的南非在2013年停止向博茨瓦纳出口能源的话，它将失去目前电力供应的70%以上。
Worldwide, wind energy under the same constraints could supply at least 40 times the current electricity consumption.
在世界范围内，在相同条件下的风能能够提供是现在电力消耗40倍的能量。
At Sheep Dog, which is twice the size of our current home, to use solar panels to effectively heat the whole house, we'd probably have to cover an acre or two to get enough electricity.
牧羊犬洼地的面积，相当于两个我现在所住的房子，如果在那里使用太阳能电池板取暖的话，我们可能就要覆盖一到两英亩的面积去获取足够的电力了。
Wind turbines off US coastlines could potentially supply more than enough electricity to meet the country's current electricity demand, the US interior department reported today.
美国内务部今天报告称，在美国海岸线设置风力发电机可以长期提供超过国家目前电力需求的电能。
We're trying to set an example because the country may face a severe electricity shortage if the current pace (of heating consumption) continues.
我们尽量以身作则，如果人们还按照现在的速度来消耗热量，那么韩国可能会面临严重的电荒。
Though the current in each nantenna is small, an array of them can produce a useful amount of electricity.
虽然单个纳米天线中生成的电流很小，但大量纳米天线组成的阵列就足以产生可以使用的电量。
When no electricity is delivered, a voltage difference between the electrodes drives a current in the other direction.
当没有电流流通时，电极之间的电压差驱动电子反方向流动。
A recent study by Xi Lu of Harvard University calculates that wind power in the U.S. could potentially generate 16 times the nation's current electricity production.
哈佛大学的西路最近的研究计算出，美国输出的风电量有可能达到现在美国总产出电量的16倍。
Or electricity. In the early 1900s, after the standardization to alternating current distribution, hundreds of small electric utilities were consolidated into huge holding companies.
再举一个电力方面的例子，早在1900年，交流电标准发布以来，成千上万的小型电力公司合并成了大型的控股公司。
Creating a magnetic field using electricity is easy: an electric current flowing in a wire generates a magnetic field around that wire.
用电流产生磁场容易：当电流在金属线圈流动时，磁场也随之产生。
Researchers have shown that they can put out a fire by zapping it with electricity — pointing an electrical wand at a flame and applying a current.
研究者已证明，他们可以用电击溃火焰的方式灭火—用电棍直指火焰并通上电流。
The current set of five are rack mounted in a co-location data centre, where I pay a monthly fee for space, electricity and bandwidth.
现在使用的一套五台设备是一起安装在架子上并放置在一个托管的数据中心里，每个月我都得付给这个中心占地费、电费、带宽费。
The software that runs in conjunction even allows the homeowner to turn off circuits remotely and to set power consumption limits based on current solar generation rates or the cost of electricity.
同时运行的软件能够让屋主远程关闭电源并根据当时的太阳能产出率或者电源价格而限定电源使用量。
It can send a jolt of as much as eight hundred volts of electricity through the water in which it lives. (an electric house current is only one hundred twenty volts.)
在它生活的水中，电鳗可以释放一阵电压高达800伏的电流(家庭用电电压也仅有120伏)。
According to America's Department of Energy, solar panels could, if placed on about 0.5% of the country's mainland landmass, provide for all of its current electricity needs.
据美国能源部(america ' sDepartment ofEnergy)的统计，如果太阳能帆板占据那怕仅仅0.5%大陆面积，就已足够供应目前所有的电力需求。
When attached to the rat's diaphragm, the animal's breathing stretched the nanowire, and it generated a tiny amount of electricity — about four pico-amps of current at two millivolts.
当连接到大鼠的横隔膜时，该动物的呼吸使纳米线得到伸展，并产生少量的电力——每两毫伏约4微微安培电流。
PLUG in your toaster—or your television or your vacuum cleaner—and the electricity that surges through it is an alternating current.
当你为你的吐司炉——或者电视、吸尘器——插好插头、打开电源时，电能便以交流电的形式为这些家用电器供电。
Solar panels generate electricity by converting photons (packets of light energy) into an electric current.
太阳能电池板通过将光子(光的能量包)转化为电流来发电。
Since carbon nanotubes conduct electricity, sending a current through the paint would help engineers to detect structural weakness through changes in the paint’s electrical properties.
碳纳米管可以导电，能沿着涂料传导电流，让工程师通过涂料电性质的变化探测出结构中的薄弱环节。
Since carbon nanotubes conduct electricity, sending a current through the paint would help engineers to detect structural weakness through changes in the paint's electrical properties.
碳纳米管可以导电，能沿着涂料传导电流，让工程师通过涂料电性质的变化探测出结构中的薄弱环节。
The energy captured by space-basedphotovoltaic arrays would be converted into microwaves for transmissionto Earth, where it would be transformed into direct-current electricity.
空间光电池阵列所收集到的电力将在转换成微波后发射到地球，再在地面上转换成直流电。
When a current flows in such a wire, the electrons that flow as electricity are forced to align their spins to those of the local atoms embedded in the wire.
当电流通过这样一根电线时，电流间的电子被迫调整其自转方向，以吻合电线上原有电子的自转方向。
Mains electricity in America is supplied as alternating current at 60 Hertz.
在美国，主要供应频率为60赫兹的交流电。
Current technologies would require between 25-30 per cent of Longannet's electricity output to be diverted into carbon capture if all of the station's emissions were to be cleaned up.
目前的科技要用25%到30%的加尼特电站的输出功率，并且要求所有的电站设施都清洁干净。
Voltage and current must be present in a circuit if electricity is to do work.
在电路中如果电要做功，就必须有电压和电流的存在。
Voltage and current must be present in a circuit if electricity is to do work.
在电路中如果电要做功，就必须有电压和电流的存在。
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