| |||
the grade separation | |||
grade separation | |||
graded separation | |||
grade classification | |||
hierarchical classification |
等级分类 : 19 phrases in 11 subjects |
Business | 1 |
Commerce | 1 |
Desert science | 1 |
Food industry | 1 |
General | 1 |
Information technology | 1 |
Librarianship | 1 |
Securities | 1 |
Shipbuilding | 1 |
Technology | 9 |
Textile industry | 1 |