active trade balance
贸易顺差
热门单词
- [WTBX]Atractylodes
- Abbe resolution criterion
- abdominal inguinal ring
- ablator
- absolute dry weight
- absolute specific gravity
- AC electromagnet for valve
- accelerating load
- accelerating pump
- accounting information
- accumulation principle
- acephalostomia
- acetone glucose
- acetylene generator
- achieve
- achondroplasty
- achromatic system
- acid Bessemer cast iron
- acid esters
- acid-proof
- acid-resistant stoneware blower
