differential action [机] 差动作用 ; 微分动作

proportional and differential action 比例微分动作

differential steering action 差动转向作用

proportional integral and differential action 比例积分微分作用

two-position differential gap action [自] 双位差隙作用

differential action structure 差动结构

Differential control action 微分调节作用

differential gravity action 差异重力作用

differential action of transformer 变压器差动保护