regulating knob of fuel pressure 燃油压力调节钮

base current regulating knob 基极电流调节旋钮

down slope regulating knob 下斜坡调节旋钮 ; 倒坡调节旋钮

pulse duty regulating knob 脉冲占空比调节旋钮

peak current regulating knob 峰值电流调节旋钮

pulse frequency regulating knob 脉冲频率调节旋钮

pre-flow time regulating knob 预流时间调节旋钮

clean area width regulating knob 清洁区宽度调节旋钮