单词	mathematics course
释义	mathematics course 数学课程
随便看	standard reference telephone circuit standard reference temperature standard reference zero standard reference zero for the callbration standard reflecting plate standard reflection shade guide standard reflector Standard reflux method standard refraction standard refractive modulus gradient standard refractive-modulus gradient standard refractivity gradient standard refrigeration cycle standard regain standard regime standard regions standard registration service standard regression standard regression analysis standard regression coefficient standard regression method standard regression model standard regulations standard reinforced fillet weld standard relative luminosity