1·Some kinds of batteries can be recharged by connecting them to a source of direct current.
有些型号的电池在接入直流电源时就能充电。
—— 《柯林斯英汉双解大词典》
2·The polarographic behavior of iodoacetic acid has been studied by using single sweep polarography, direct current polarography and cyclic voltammetry.
碘乙酸的极谱行为已通过单扫描极谱法，直流极谱法和循环伏安法进行了研究。
3·Direct current is safe.
直流电才是安全的。
4·The electrons go on to form a useful direct current.
这些电子然后形成一种可被利用的直流电。
5·A device for converting alternating into direct current.
把交流变为直流的器件。
6·How improve the influence of direct current drive on the LCD?
如何改善直流驱动对液晶显示器的影响？
7·The current flowing in one direction is called direct current .
沿着一个方向流动的电流叫做直流电。
8·A direct current is a current flowing always in the same direction.
直流电是总是沿同一方向流动的电流。
9·Diodes are electronic devices which rectify alternating current to direct current.
二极管是将交流电整流成直流电的电子装置。
10·Direct current (DC) Direct current is current with no reversals in polarity.
直流直流是指没有正负极性往复变化的电流。