The useful power in ac circuit also depends on the current and voltage in the circuit.
交流电路中的有用功率还取决于该电路中的电流和电压。
If even a small proportion of this wasted heat could be converted to useful power, it would be a good thing.
如果把浪费掉的很小的一部分热能转换为有用的能量，这都是件好事。
Carry the analyse in theory and calculate on useful power and thermal waste of conduct heating machine;
对感应加热器的电效率和热损耗功率进行了理论分析和计算；
Pattern matching is another feature found in many, if not most, functional languages, and offers some useful power.
模式匹配是许多（但不是大多数）函数语言中可以找到的另一个特性，它提供了一些有用的功能。
For these applications, designers focus on circuits able to convert even the smallest available voltage levels to useful power.
对于这些应用，设计人员集中于电路能够连转换最小可用电压电平到有用功率。
The counting expression reflects the general conditions of the useful power of the centrifugal mill, and it proves the feasibility and reason of the expression.
计算表达式基本反映了离心磨矿机有用功率的总体情况，说明其表达式合理可行。
The experiments also show that the useful power of the centrifugal mill is account for 40% of the input power, and it is higher than the ordinary ball mill (which account for 30%).
试验还得知，离心磨矿机的有用功率为输入功率的4 0 %左右，高于普通球磨机(30 %)。
All those traits will be useful as the global economy's new power player takes on its most annoying problems.
当全球经济的新力量开始处理最烦人的问题时，所有这些特征都将发挥作用。
The power of ideas and the ability to turn them into useful things is what propels us forward as a society.
点子的力量和将它们转化成有用的东西的能力是将我们如社会一样向前推动的源动力。
That's when the power of metaphor shines through and becomes something useful to them, helping them survive turbulent change or reach for that next big goal.
这时隐喻的力量就开始闪现并成为对他们有用的事物，帮助他们挺过混乱的变化或实现下一个目标。
It is a virtuous feedback loop, harnessing the power of network effects to create a more useful product.
这是一个良性反馈回路，利用网络效应的力量，创造一个更有用的产品。
Other random items that I have found useful: sunglasses, international power converters, first-aid kit, gloves, hat, swimsuit, a few USB drives and toiletries.
我发现的其他有用的物件有：太阳镜，国际电源转换器，急救包，手套，帽子，泳衣，一些USB驱动程序和化妆品。
The power of this is that content can be personalized or remixed with other data to create much more useful tools.
它的力量在于，借助接口，人们可以通过内容的定制或与其他数据的重组创造出新的更有价值的工具。
Much of northern Japan remains without power, so it remains to be seen if the system, which was triggered, arrived in time to provide a useful warning.
日本北部的大部分地区仍然没有电，因此，这个已经启动的系统是否会及时提供有用的警报，仍有待于观察。
If you can build a research tool that propagates virally and gets more useful with each person who uses it, you build a business with phenomenal power.
如果你能开发一种研究工具使病毒性增值，并且更有用，那你就建立了一种具有现象力的商业。
But more recently, scientists have begun to realise that distributed human brain power itself can be a useful commodity, as in working out the shape of proteins.
但是最近科学家已经开始认识到分布式人肉计算更加有用，例如对蛋白质形状的计算。
Britain had many rivers, which were useful for transport but also for water and steam power.
英国有许多河流，不仅用于交通，还提供水力及蒸汽动力。
Every UI builder should find this power tool useful.
每个UI构建人员都应发现这一功能强大的工具是有用的。
"It is the age when anyone can make themselves useful," the article read in part. "It gives help to the helpless, power to the powerless."
“这是个所有人都能使自己发挥作用的时代，”这篇文章写道，“可以给无助的人以帮助，给无力的以力量。”
This could be particularly useful for hikers and mountain climbers, who spend much of their time away from power sources.
这对那些徒步的人和登上的人特别有用，他们经常有大量的时间是远离电源的。
But until now their solutions have been too cumbersome, or have not produced enough power to be useful.
但是，直到现在，他们的方案都太过繁琐，或者难以产生足够的可以使用的能量。
Google, by contrast, saw it as a big maths problem that could be solved with a lot of data and processing power-and came up with something very useful.
谷歌，相比之下，把这个问题看成是一个很大的、可通过大量数据和处理能力解决的数学问题——这样就创造出了一些非常有价值的东西。
It's useful for recovering from server lock-ups, BSODs, virus infections, and unexpected power outages.
对于服务器锁定、BSOD、病毒感染和意外断电，它对恢复过程非常有用。
There is a ton of stuff you can throw into your laptop bag (besides the laptop and the power cord), but what are the things that are really useful that you can put in there?
在电脑包里除了电脑和电源之外，还有很多东西都可以放扔进去。但是什么东西才是真正值得放进去的呢？
Will power and self discipline are two of the most important and useful inner powers in everyone's life, and have always been considered as essential tools for success in all areas of life.
意志力和自律性在每个人的生活中是两个最重要最有用的内在能力，它们经常被看做是在每个领域取得成功的基本工具。
Because metaphoris such a powerful aspect of how people think and express themselves, it's useful to consider how we can leverage its power in UX design.
由于隐喻在人们思考和表达自己时是如此重要的一个方面，我们可以借此思考如何让它在用户体验设计中大展拳脚。
Canada's largest city has been pioneering the idea that instead of using electricity to power air conditioning, a useful supply of cold can be directly extracted from the environment.
加拿大最大的城市已经率先使用这一想法来取代利用电力来进行空气调节，在这里可利用的冷却资源供给可以直接从环境中获得。
Converting currencies by purchasing power, rather than market rates, is useful when comparing living standards in different countries.
对比不同国家的生活标准时，采用购买力换算货币比采用市场汇率显得更有意义。
This particle puppeteering, he says, could be useful in generating plasma currents to stabilize fusion power-generation technologies.
他说这种粒子控制技术能够用于产生等离子体流，从而核聚变发电技术稳定化，实用化。
This particle puppeteering, he says, could be useful in generating plasma currents to stabilize fusion power-generation technologies.
他说这种粒子控制技术能够用于产生等离子体流，从而核聚变发电技术稳定化，实用化。
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