activity learning
活动学习
热门单词
- absorption dynamometer
- acetin
- acid pickled magnesium ingot
- acid yellow
- acid-resisting iron
- acidification
- acoustic absorptivity
- acoustic treatment
- acre
- acrosyndese
- active fire protection system
- adaptive robot system
- addendum cone
- adhesive disk
- adjustable tap wrench
- adjustment procedure
- admissible condition
- admissible hypothesis
- adsorption exponent
- adult disease
- aedeagus
