词汇	double objective
释义	double objective 双胶物镜
随便看	difference number difference numerical algorithm difference of ability difference of absolute costs Difference of Adverbial and Complement difference of aesthetic perception difference of a function Difference of age within one generation difference of air temperature difference of altitude difference of animacy hierarehies difference of arcing time difference of areas difference of atitude difference of bed height difference of being difference of brightness Difference of capability difference of classes difference of closure temperature difference of comparative costs difference of cost difference of counting time difference of county economic level difference of creed