电化学电池，特别是锂电池，成为了最佳选择，因为它们把化学能转变为电能效率很高并且无有毒物质释放。
Electrochemical batteries, lithium ones in particular, are the best option, converting stored chemical energy into electricity with high efficiency and without toxic emissions.
由于可以让电子毫无阻碍地通过，这种超导体将可以明显提高电能传输的效率。
By permitting electricity to travel freely, without resistance, such a superconductor could dramatically improve the efficiency of power transmission technologies.
有四个泵结构和通路的电池比较容易制造，但其把糖转换成电能的效率仅为百分之四左右。
A cell with four pumps and channels was easier to make but only about four percent as efficient at converting sugar to electricity.
这样，这些锂离子电池可以从可再生能源中存储多余的能源，有助于平抑电能供应的小波动，提高电网的效率，降低对备用火电厂的需求。
There, they could store excess power from renewables and help smooth small fluctuations in power, making the grid more efficient and reducing the need for backup fossil-fuel plants.
大多数公用事业公司并直面这个问题，而是试图通过增加电站的燃烧效率使得消耗每一公吨煤炭或制造每一公吨二氧化碳时能够获取更多的电能。
Most utilities tackle the problem indirectly, by attempting to improve the efficiency of their plants, and so to squeeze more electricity from each tonne of coal consumed or carbon dioxide produced.
能源：海洋的动能转变为电能时效率和弹性不可兼得——非如此不可吗？
Energy: Converting the motion of the sea into electricity requires a trade-off between efficiency and resilience—or does it?
大约十年前，光电效率(即光能转换成电能的转换率)只有10%，而现在已经能达到40%。
A little over a decade ago, the best photovoltaic efficiency, or sunlight conversion into electricity, was 10 percent, and now it can reach 40 percent.
上述系统总体上可节约40%的电能。 索尔贾希克博士希望通过粗略修改系统用料及系统设计来提高效率。
The proposed system has an overall efficiency of 40% and Dr Soljacic hopes to boost this by tinkering with the materials and layout.
独立式涡轮的最大缺点是他们将机械能转化为电能的效率低于大坝内安装的涡轮。
The big disadvantage of free-standing turbines is that they are less efficient in transforming the mechanical energy of water into electrical energy than turbines in dams are.
机器人的效率是被定义为它在爬行过程中所吸收电能的比例，教授解释道。
The robot's efficiency is defined as the ratio of work performed in the act of climbing to the electrical energy consumed by the robot, he says.
在一项提高能源效率的努力中，智能工作场所的很大一部分热来自于太阳能，然后从发电机获得热量。注：我的理解是不是先太阳能发电，然后电能转换成热能？
In an effort to increase energy efficiency, much of the heat in the Intelligent Workplace comes from solar thermal energy and recaptured heat from generators.
设计小组计算CO2的排放量是基于法国核电的电能产生效率。
The team calculated the CO2 emissions based on the amount of electricity generated by nuclear power in France.
在把糖转换为电能的效率方面，天然电鳗电池为百分之十四，而他们设计的电池为百分之十九。
Natural electric eel cells are about 14 percent efficient at converting sugar into electricity, compared to 19 percent for the engineered cells.
哈格尔施泰因是麻省理工学院电子工程专业的副教授。他说，现有的固态装置在把热能转换成电能时的效率不高。
Hagelstein, an associate professor of electrical engineering at MIT, says existing solid-state devices to convert heat into electricity are not very efficient.
智能电网用效率更高、成本更低的传输方法——长距离地将电能传输到地方输电线、家庭和企业的终端用户。
Smart grid describes a more efficient, less costly method of moving electricity along long-distance transmission lines to local power lines and end-users in homes and businesses.
自立式涡轮机最大的缺点是在将水能转换成电能方面，它们没有大坝中的涡轮机的效率高。
The big disadvantage of free-standing turbines is that they are less efficient than turbines in DAMS at turning the kinetic energy of moving water into electricity.
灯泡的这种无效率，是为美国在电能灯泡方面排放的二氧化碳相当于其车船排放量一半的最大原因。
This inefficiency is the big reason why in the United States, the power used to light Edison bulbs produces half as much carbon dioxide as the country's car fleet.
科学家们称，如果这些热电子能够在转化成热能浪费掉之前被捕获，光电能量转化可以达到最高66%的效率。
If the energy of these hot electrons could be captured before it is converted into wasted heat, solar-to-electric power-conversion efficiencies could be increased to as high as 66%, say scientists.
术语“效率”是指扬声器系统将电能（功放的推力）转化为声音输出的能力。
The term "efficiency" refers to the ability of a speaker system to convert electrical energy (power from the amplifier) into acoustic output.
它产生的电能很有效率地，60%可在仅有20%的最大力量。
It produces electrical energy so efficiently that 60% is available at just 20% of maximum power.
由旧式干燥炉改装成远红外加热干燥炉，用于井下机械维修，既提高了维修效率，又节约了电能，而且安全可靠。
Old drying stove is re-equiped into far infrared heating drying stove for underground machinery repaired. It can lift repair efficiency, save power and safety and reliable.
工程师们说他们确信智能电网会立刻提高电能的效率并降低消费者的电费，即使用户们还没不能充分娴熟地使用新的装置。
Engineers say they are certain the smart grid will immediately increase energy efficiency and reduce consumer's bills, even before consumers are fully adept at using their new devices.
铝电解槽的电能消耗率同平均电压和电流效率两个因素有关。
The energy consumption rate of aluminum electrolytic bath is related with the average voltages and current efficiency.
通过对吸风机作性能试验，比较各种可行方案，认为吸风机电机加装变频器可以提高风机效率，节省大量电能。
Through the ID fan to make performance tests to compare the various options that the installation of ID fan motor inverter can increase fan efficiency and save a lot of power.
采用电动修复装置进行试验，研究了污染高岭土电动修复过程中不同电压对修复效率和电能消耗的影响，探讨了其经济有效的电压范围。
This study discussed the effect of applied voltage on the removal efficiency and electrical energy consumption of electrokinetic remediation kaolin polluted by hexavalent chromium at laboratory scale.
采用电动修复装置进行试验，研究了污染高岭土电动修复过程中不同电压对修复效率和电能消耗的影响，探讨了其经济有效的电压范围。
This study discussed the effect of applied voltage on the removal efficiency and electrical energy consumption of electrokinetic remediation kaolin polluted by hexavalent chromium at laboratory scale.
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