单词	four-point switch
释义	four-point switch 四接点开关
随便看	system of data processing system of decentralization system of deduction system of defence system of defense system of democracy system of democratic centralism system of democratic consultation and dialogue system of democratic management System of Demographic Statistics system of dependent particles system of deposit insurance system of designation system of design management system of design reuse system of developing System of Development Principle system of difference equation system of difference equations system of differential equation system of differential equations system of differential operators System of digital seismograph system of diophantine equation system of diophantine equations