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.
网上有很多地方都卖直流电动机。
好消息是直流电网的建造成本更低。
本设备只能使用12V直流电源。
沿着一个方向流动的电流叫做直流电。
The current flowing in one direction is called direct current .
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.
这些电子然后形成一种可被利用的直流电。
交/直流电压，电压几百伏到数万伏可调。
It is performed in AC or DC with voltages varying from some hundred volts to several tens of kilovolts.
直流电流源或电压源。可指定交流分量的大小。
DC current or voltage source. Magnitude of AC component can be specified.
垃圾转运站范围提供的直流电动机控制整个范围。
The RTS range provides control for the whole range of DC motors.
而中央直流电源直接为服务器供能将大幅提高效率。
It would be far more efficient to power servers directly from a central DC supply.
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.
欧姆定律—在直流电路中，电压，电流与电阻的关系。
Ohm's Law - relationship between voltage, current and resistance in D. C. circuit.
发动机采用高压直流电驱动，电流转换通过直流-直流转换器实现。
The motor is powered by high voltage DC supply and the current from the fuel cell system is regulated via a DC DC converter.
最重要的：在世界粮食理事会电容断开直流电源，依靠自己的排放。
Above: the WFC capacitor is disconnected from the DC power supply, its discharges on itself.
开关电源把直流电源或交流电源通过它可以获得一个稳定的直流电压源。
Switching power supply or DC power to AC power through it will be a stable DC voltage source.
应至少在每次换班时用直流电伏特计检查一次漏涂检测仪以确保其准确度。
The holiday detector shall be checked with a DC voltmeter at least once each shift to ensure accuracy.
加上出色的直流电阻稳定，分流可用于直接测量电流通过他们的全部带宽。
Combined with excellent dc resistance stability, the shunts can be used to directly measure current through their full bandwidth.
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.
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.
对于直流电流测量﹐在电流通道串联一电流分流器﹐将电流转换成直流电压信号。
For DC current measurement, a current shunt is place in series in the current path and convert the current to a DC voltage signal.
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.
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.
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.
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.
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.
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.
因此它可以把“两倍于电源频率的直流电”进行“平滑化处理”，成为一个接近恒定的直流电。
Therefore it can be seen that it will "smooth" the "twice mains frequency DC" into a near constant DC voltage.
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.
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.
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