词汇	曲柄半径
释义	曲柄半径医crank radius
随便看	operator-defined occurrence operator-defining occurrence operator delay operator delete operator dial operator dialing working operator dialling working operator difference table operator differential equation operator-differential equation operator display operator display terminal operator display terminal protocol operator-distal operator distance dialing operator distribution operator document Operator does not go backwards operator domain operator dominance operator dominant system operator endomorphism operator equation operator equation of state operator equations