Cutting occurs at the touching point only, it does not occur in all working range.

切割只发生在刀片经过的那一点上，并不同时发生在刀片的整个工作宽度内。

youdao

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

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