转动轮子只需要1.5千瓦时（5.4兆焦耳）的能量，这与使用8壶家用小水壶的能量大致相同。
It takes just 1.5 kilowatt-hours (5.4 M J) energy to rotate the Wheel -roughly the same as boiling eight small domestic kettles of water.
根据国际可再生能源机构（IRENA）的数据，我们只需利用2%的海岸线，就能每年生产4383太瓦时的海洋电力，足以满足全世界4%的电力需求。
According to the IRENA (the International Renewable Energy Agency) , by just using 2% of our coastlines, we can produce 4,383 TWh of ocean power each year, enough to meet 4% of the world's electricity needs.
随机9芯/85瓦时电池
每千瓦时电能的生产都会排放一定量的 CO2。
The electricity production process will typically result in a certain amount of CO2 emission per KWH generated.
他在日内瓦时就有了这种想法，他一定要孝敬姑母。
He had imbibed at Geneva the idea that one must always attentive to one's aunt.
目前最便宜的太阳能每兆瓦时需要120-140美元。
The cheapest solar power now costs $120-140 per megawatt hour.
通常来讲，煤生产每千瓦时产出的二氧化碳约为天然气的两倍。
Coal typically produces almost twice as much carbon dioxide per kilowatt-hour as natural gas.
为便于比较，日产的新电动车，利夫，配备的是24千瓦时的电池。
For comparison, Nissan's new electric car, the Leaf, comes with a 24-kilowatt-hour battery.
在1990年代早期，这种电池每升的能量密度是大约10 0瓦时。
In the early 1990s, such batteries had an energy density of about 100 watt-hours per litre.
而排放硫、汞和煤灰的煤炭，其每千瓦时产能所造成的死亡人数仍将远远高于核能。
Coal, with its emissions of sulphur, mercury and soot, will continue to kill far more people per kilowatt hour than nuclear does.
既便如此，对去年高达337.6太瓦时的总需求来说，这只是杯水车薪。
Even so, it will make only a small contribution to total demand, which last year amounted to 337.6TWh.
他表示今年下半年，激光能若达到400瓦时，这个工序将会在商业上可行。
The process will, says Dr Yabe, become commercially viable when the laser power reaches 400 watts, which could happen later this year.
电度表电度表记录系统中某一点的总电力输出，通常以千瓦时为记录单位。
Watt-Hour Meter A watt-hour meter records the total power output at a specific point in a system. Typical recording increment is in kW-hours.
我们安装的电表以千瓦时为单位测量电量，并将读数远程传输到结算系统。
We install individual electric meters that measure electricity consumption in kWh and transmit the readings remotely to our system for billing.
该款汽车的电池容量为24千瓦时，相当于普通日本家庭两天的用电量，日产公司指出。
The Leaf batteries have a capacity of 24 kilowatt hours when fully charged, equivalent to the electricity used by the average Japanese household in two days, said the company.
我们飞向日内瓦时，新护照放在我们新夹克兜内，我哥哥和我因恐惧而不知所措。
As we flew into Geneva, our new passports in the pockets of our new jackets, my brother and I were overcome with terror.
用电，却很便宜，把Leaf的24千瓦时的电池组从空充满只需2.64美元。
Electricity, though, is pretty cheap, and filling a Leaf's 24 kilowatt-hour battery pack from empty should cost only about $2.64.
但是健康饮食和电费单不同，这不仅仅是像减少千瓦时用电一样食用更少的盐或糖那么简单。
But a healthy diet isn't like an electricity bill; it's not as simple as using less salt or sugar as though you were cutting down on your kilowatt hours.
即使是最好的反渗透设备也需要3.7千瓦时的能源才能产出1000升的饮用水。
Even the best reverse-osmosis plants require 3.7 kilowatt hours (kWh) of energy to produce 1,000 litres of drinking water.
因为氢生产是一种能量密集型工序，从甲烷获取氢每千瓦时将产生更多的二氧化碳。
The production of hydrogen from methane in converters will generate higher CO2 emissions per kilowatt hour since [hydrogen production] is an energy-intensive process.
在前40英里，伏特仅由16千瓦时的锂电池储存电力供应，不使用任何燃料，不产生废气。
For up to the first 40 miles, the Volt is powered solely by electricity stored in its 16-kwh lithium-ion battery, using no fuel and producing no emissions.
但是健康饮食和电费单不同，这不仅仅是像减少千瓦时用电一样食用更少的盐或糖那么简单。
It's not as simple as using less salt or sugar as though you were cutting down on your kilowatt hours.
根据Mosquet的数据，日产Leaf汽车的24千瓦时锂电池组的成本是2万4千美元。
According to Mosquet's numbers, the 24 kilowatt-hour lithium-ion battery pack in the Nissan Leaf has a cost of about $24, 000.
在之后的5年内每年攀升500亿瓦并帮助企业优化生产线，这样太阳能发电的价格将下降到6美分每千瓦时。
In the next five years, annual construction would rise to 5 GW apiece, helping firms optimize production lines. As a result, solar electricity would fall toward six cents per kWh.
相比之下，西门子公司的电化学方法每立方米消耗1.8千瓦时的电量，并且有望被降至1.5千瓦时每立方米。
The Siemens system, by contrast, consumes 1.8kwh per cubic metre, and the firm hopes to get that down to 1.5kwh.
一种方法是海水蒸馏，通过加热卤水可以得到浓缩的水蒸气，这种方法每淡化1立方米的海水需要10千瓦时的电量。
Some employ distillation, which needs about 10 kilowatt-hours (kWh) of energy per cubic metre of seawater processed. Brine is heated, and the resulting water vapour is condensed.
一种方法是海水蒸馏，通过加热卤水可以得到浓缩的水蒸气，这种方法每淡化1立方米的海水需要10千瓦时的电量。
Some employ distillation, which needs about 10 kilowatt-hours (kWh) of energy per cubic metre of seawater processed. Brine is heated, and the resulting water vapour is condensed.
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