短語詞組短語bevel protractor 量角規(guī);斜量角器;測角儀;斜口分度規(guī)circular protractor 圓分度器;量角器optical protractor 光學測角器;光學量角器alidade protractor 照準儀量角器;照準儀分度器protractor screen 測角投影屏propeller protractor 推進式量角器Digital Protractor 試試數(shù)字量角尺Radian Protractor 弧度制量角器 返回 protractor