二极管是将交流电整流成直流电的电子装置。
Diodes are electronic devices which rectify alternating current to direct current.
将储蓄的化学能转变为直流电的电气装置。
An electrical device for changing stored chemical energy into direct electric current.
补好的补口应使用带8千伏直流电的漏涂检测仪来检测。
The finished joints shall be inspected with a holiday detector set at 8kV DC.
一个把220 ~ 250伏交流电转化成高压直流电的变压器。
An electrical power transformer that converts 220-250 volts AC current to high voltage DC.
当时制造的直流电的调速电梯基本上是发电机拖动，使用噪音大。
The rapid elevator of the direct current manufacture at that time accent is that the dynamo drags haul essentially , The use noise is greatly .
交流电与直流电的不同之处在于交流电不断地改变其电流流动方向。
Alternating current is different from direct current in that it constantly changes its direct of flow.
通常的方法就是使用整流器---一种把交流电转换为直流电的装置。
The usual way to do this would be to use a rectifier—a device that converts alternating to direct current.
发现了手摇交流发电机演示实验中出现脉动直流电的奇异现象并对此作出了合理的解释。
The phenomenon of a pulsating direct current in demonstrative experiment of hand alternator is founded and the reasonable explanation is presented.
在使用直流电的地方即产生人为的静电磁场，例如在电车或诸如铝生产和气焊等工业操作程序中。
Man-made static magnetic fields are generated wherever DC currents are used, such as in electric trains or industrial processes such as aluminium production and in gas welding.
在电子技术中，把交流电转换成低电压直流电的一种电路。这种电路的输出是经过调整的，使它的噪声及电压波动都很。
In electronics, a circuit for converting AC voltage to low voltage DC in such a way that the output is regulated to minimize noise and voltage fluctuation.
有些型号的电池在接入直流电源时就能充电。
Some kinds of batteries can be recharged by connecting them to a source of direct current.
不足处是反向电渗析产生的是直流电，而世界上主要使用交流电。
The disadvantage is that reverse electrodialysis produces direct current, whereas the world runs mostly on alternating current.
该系统产生的电流为直流电，所以用来驱动本地的直流点装置比将其转化为交流电输入电网来的更有效率。
The system generates a direct current, so using it to power DC devices locally is more efficient than switching to the alternating current needed to feed it back to the grid.
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。
The energy captured by space-basedphotovoltaic arrays would be converted into microwaves for transmissionto Earth, where it would be transformed into direct-current electricity.
使用直流电是产生静电磁场的另一个原因，例如铁路系统使用直流电，电视和计算机屏幕带有阴极放射管。
The use of DC electricity is another source of static electric fields, e.g. rail systems using DC, and televisions and computer screens with cathode ray tubes.
他计划使用直流电场技术，结合飞秒与纳秒激光工艺，对它们的光学与结构特性进行纳米设计。
He plans to nanoengineer their optical and structural properties using DC electric-field techniques, coupled with femtosecond and nanosecond laser processing.
机身上的圆盘形整流天线能接收地面传输的微波能，将其转化为直流电为飞机推进器上的电动机供能。
A large disc-shaped rectifying antenna attached to the fuselage harvested the microwave energy, turning it into direct current to power an electric motor attached to the plane's propeller.
公司生产电力逆变器，把太阳能生成的直流电源转换为使用最多最需要的交流电源。
The company manufactures power inverters necessary to convert the DC power generated by solar panels into the ac power required for most USES.
选择交流电作为工业标准的原因很简单，在早期供电距离很短的电网里，交流电的损耗比直流电小。
The reason was that over the short distances spanned by early power grids, AC transmission suffers lower losses than DC. It thus became the industry standard.
一些先进的光伏电池甚至可以提供更高的效率，但是由于要把直流电源转化为交流电，转换效率有所降低。
Some cutting-edge photovoltaic cells offer an even higher initial efficiency but fall behind when the DC power they produce is converted to grid-ready alternating current.
好消息是直流电网的建造成本更低。
问题是直流电源并无单一标准，因此拥有不同卖家设备的数据中心很难做到这样的能源节约。
The problem is that there is no single standard for DC power supplies, so such savings cannot easily be achieved in a data centre filled with equipment from different vendors.
通过高压直流电电缆输电相同距离，损失只有2- 3%，这使得在最便宜的地方发电，再输电至最需要的地区去变得更易实现。
HVDC cables can transmit electricity over similar distances with losses as low as 2-3%, making it easier to generate electricity where it is cheapest and send it to where it is needed.
子弹藏有一块小磁铁和一颗芯片，子弹旋转带动小磁铁产生直流电，芯片通过电流波动感知射程的远近。
The bullet has a small magnet inside that lets it generate AC current as it spins and a microprocessor that measures those current oscillations to derive how far it's traveled.
由于在传输过程中采用高压直流电缆输送的损耗要比传统交流电的损耗小得多，因此采用交流电远距离传送电力很不划算。
Energy losses on DC lines are far lower than on the traditional AC ones, which make transmission of energy over long distances uneconomic.
TransCanada公司亦提出要铺设2200英里的高压直流电线路来输送自蒙大拿州和怀俄明州的风能到南部拉斯维加斯及更远。
And TransCanada, Inc., is proposing 2, 200 miles of HVDC lines to carry wind energy from Montana and Wyoming south to Las Vegas and beyond.
起初给扑翼机接上一个直流电源之后，他们发现这个装置的有效载荷为1.5g，这大概可以勉强提起飞行所需的电池。
Having initially connected the ornithopter using a DC power source, they realized that the device could lift 1.5 grams of payload, which was roughly the mass of the batteries required for flight.
与阿波罗的3个电池储备和28伏的直流系统相比，猎户飞船将有6个电池的电力储存，使用120伏的直流电源分配系统。
It will hold six batteries for power storage and will use a 120V DC power distribution system, compared to Apollo’s three-battery storage and 28V DC system.
约能生产8400亿瓦的聚光太阳能发电及太阳能电池厂将会在2020年建成，与此同时直流电传输系统也有了一定基础。
About 84 GW of photovoltaics and concentrated solar power plants would be built by 2020. In parallel, the DC transmission system would be laid.
约能生产8400亿瓦的聚光太阳能发电及太阳能电池厂将会在2020年建成，与此同时直流电传输系统也有了一定基础。
About 84 GW of photovoltaics and concentrated solar power plants would be built by 2020. In parallel, the DC transmission system would be laid.
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