regulation speed meaning in English

调节速率
限制车速

She was fined for driving above the regulation speed
她因超速开车而被罚款。
The tap - changer is made with solid state relay as its working mechanism and controlled by microprocessor . this switch has totally cancelled the mechanical drive organization , by the microprocessor according to the voltage of second side microprocessor decide the working condition of solid state rely , high regulation speed , need not transition resistor , rush current is low . operating frequently ; there is no electric arc to produce , can put in the fuel tank of the voltage transformer directly ; the structure is simple , the fabrication cost is low , benefit and use widely among the voltages transformer of distribution
其中的有载调压分接开关，它是一种完全由固态继电器作为分接开关执行机构，由单片机控制的有载自动调压的变压器分接开关。该开关完全取消了机械传动机构，由单片机根据变压器二次侧电压的高低，决定与变压器各分接头联接的固态继电器的工作状态。调节速度快，改变分接头时不需过渡电阻，冲击电流小，可频繁操作；无电弧产生，可以直接放在变压器油箱中；结构简单，造价低，便于在配电变压器中推广使用。