单词	duck r.
释义	Duck R.鸭河Duck R.鴨河外國地名譯名
随便看	fixed column fixed command control fixed command control (regulator control) fixed components； embedded components fixed condenser fixed connection fixed connector fixed constant fixed contact fixed contamination fixed continuous-time system fixed control fixed control area fixed control computer fixed control storage fixed coordinate system fixed-coordinate system fixed cost fixed cost--constant cost fixed cost contract fixed costs fixed-cost sequential bargaining games fixed costs of working fixed cost--standby cost fixed cost，fixed expense