The traditional control cabinet of oil-pumping unit is using continuous electricity contact system through the mechanical touching point by closing and opening to achieve the circuit's "on" and"off".

传统的抽油机控制柜大都采用继电接触系统，通过机械式触点闭合、断开实现电路导通或断开。

youdao

It makes contact with the piezoelectric material under it and generates anywhere from two to 20 watts of electricity, depending on the impact of the patrons' feet.

地板与在它下面的电压材料接触，并产生2到20瓦特的电力不等。

youdao

When electricity or transiting the machine is now in action, please don't contact electrical ark and work station of any electrical components within.

当通电或数控切割机正在运转时，请不要接触电器柜和操作台内的任何电气元件。

youdao

The authority said there may still be individual, isolated homes which do not have electricity and those affected should contact SSE.

BBC: Homes on Arran lose power again due to a generator problem

"We would ask that customers do not phone in to report these dips and only contact us if their electricity is completely off, " added Ms Carson.

BBC: NIE confirm network fault caused Belfast blackout

Each contact can be independently controlled, on or off, with various levels of electricity.

CNN: Treating depression with electrodes inside the brain