查询词典 direct current

After researches it was found that it takes place only in case of direct current or impulse current.

经过研究发现，它只是发生在案件直接电流或脉冲电流。

A direct current is a current flowing always in the same direction.

直流电是一种总是沿同一标的目的流动的电流。

The earth point faults of direct current feed lines are localized with testing of leak current.

基于对地直流泄漏电流的检测来确定馈电支路的接地故障。

The disadvantage is that reverse electrodialysis produces direct current, whereas the world runs mostly on alternating 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。

FULL-WAVE RECTIFIER, An electronic circuit which changes an alternating current signal into a pulsating direct current signal.

全波整流器，用来将交流电信号变成脉冲直流电信号的电路。

The oscillator circuit of detecting leak current is designed, with which the inductance of detection coil is converted to frequency of oscillatory signal, and the oscillatory signals are used to eliminate the residual magnetism in coil after removal of leak direct current.

所设计的检测电路把敏感线圈电感的变化转换成振荡信号频率的变化，实现了对直流泄漏电流的精确检测，且交变振荡信号又能有效地消除敏感线圈中直流电流引起的剩磁现象。

But ISE has some drawbacks:(1) general ISE is too large;(2) with its high output impedance(about 109 Q), only devices with high inputimpedence and low input offset current can be used to match the ionometer;(3) it is difficult to measure weakly direct current or voltage.

针对以上问题，本课题探索研究了一种基于声表面波(Surface Acoustic Wave，SAW)传感器的液相金属离子在线实时检测技术，在实验平台上实现了液相中多种金属离子现场的同步测试和分析。

A series of researches have been developed on cathode design, process control and machining gap control etc. Several results that are valuable to applications and instructively significant have been gained.PECM is a new technology that the pulse power, especially the high frequency and short pulse current power, is applied and the traditional direct current power is replaced instead.

脉冲电化学加工是用脉冲电源代替传统的直流电源，尤其是高频、窄脉冲电流的引入，使脉冲电化学加工中间隙过程的电化学特性、流场特性和阳极溶解特性等都得到了很大的改善，其加工精度、表面质量和加工效率都有了很大的提高。

In every period, do the following operations:# For each 8*8 block, do the discrete cosine transform, then take out direct current coefficient in each block, using the transformation above for each DC coefficient, the gold stands for the code of the spread-spectrum we use when embedding the different watermark bit in different frames, after all of the watermark information which we want to embed is embedded, then do the inverse discrete cosine transformation, and store the current frame in a new file.

于是利用DCT变换域的这点重要的几何不变性，我们可以推导出一种能够抵抗几何攻击的视频水印算法，即将所需要嵌入的水印信息以127位扩频序列作为辅助，以求和值形式嵌入到DCT变换后的每个宏块的每个DC系数当中，具体嵌入和提取算法如下：根据使用的扩频序列的长度N，基于相关的嵌入器需要选取包含N帧的视频子序列，令这N帧视频子序列作为一个嵌入周期，对于每N帧视频子序列做如下的操作，#即对于每个8×8的像素块进行DCT变换，然后取出每个DCT变换后的直流分量，对于每个DC系数，做如上所述的变换，其中gold为在第k帧中嵌入第i位水印信息时使用的扩频码字值，待将所有需要嵌入的水印信息全部嵌入后，再做反DCT变换，保存当前帧。

Under the terms of the contract, ABB will add one additional high-voltage regulating transformer (rectiformer, used to convert alternating current to direct current) rated at 100 megavolt amperes, to increase capacity in two smelting potlines.

根据合同条款，ABB将添加另外一个额定100兆伏安倍的高压调节变压器（整流变压器，用来把交流电转换为直流电），以增加两个冶炼电解电池列的产能。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。