英语词汇“小学各低年级”的翻译、意思、用法、释义-英汉汉英词典

单词	小学各低年级
释义	小学各低年级phr.primary grades[复]〈美〉初小各年级，小学各低年级
随便看	variable-depth sonar variable-depth sonar (vds) variable descent gradient variable diameter screw variable difference method variable differential group delay variable dilution sampling variable diode function generator variable direction variable directional coupler variable-discharge turbine variable displacement motor variable-displacement oil motor variable displacement pump variable-displacement pump variable distributed lag variable domain variable duration impulse system variable electrical delay variable element variable end-point variable end-point problem variable equilizer variable error variable escapement