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。

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。

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。

A device for converting alternating into direct current.

把交流变为直流的器件。

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？