7-bar pattern
日字形七划图形
热门单词
- abnormally prolonged erection of penis
- abyssal hill
- abyssal rock
- acceptable material
- acceptable quality level (AQL)
- acceptance of service
- acceptor impurity
- accident frequency
- accounting for estates and trusts
- accuracy to size
- acetonic
- achrodextrin
- acid development
- acid feeder
- acid splitting
- acknowledge character (ACK)
- acknowledgment signal
- Acorn cell
- acoustic board
- acoustic phonon
- acoustic resistance
