abacus
算盘栏杆小柱顶珠算
热门单词
- achievement test
- acknowledge
- acoustic thermometer
- acrylic plastics
- acrylic-vinylon mixed raised scarf
- actinic lamp
- action of force
- action reports
- actual parameter
- adding model
- adjustadle wrench
- adolescent education
- Adrian principle
- Advisory Committee on Safety
- aerial choke
- aerial optical fiber cable
- aerobic bacteria
- aerobic culture
- aerocartography
- aeromagnetic survey
- aerospace survey
