The systems are getting smaller and using lower voltages.

这些系统正变得更小而且使用更低的电压。

But cold plasmas can be made using high electrical voltages.

低温等离子体可以通过高电压获得。

NOTE 2 Working voltage takes into account resonant voltages.

注2：工作电压考虑了谐振电压。

Many life processes involve alternating voltages and currents.

许多生命过程涉及到交变电压和交变电流。

To measure voltages, the current taken by the instrument must be small.

要量度电压，仪表通过的电流必须小些。