first and second
| isomorphism theorems
| first and second | |
| busin. | 一级品与二级品; 甲、乙级 |
| earth.sc. | 第一和第二类; ~等品与二等品 |
| econ. | 第一和第二 |
| textile | 甲、乙级; 一等品与二等品 |
| isomorphism theorem | |
| cryptogr. | 同构定理 |
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| 一级品与二级品; 甲、乙级 | |||
| 第一和第二类; ~等品与二等品 | |||
| 第一和第二 | |||
| 甲、乙级指品种等级; 一等品与二等品 | |||
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| 一级和二级 | |||
| English thesaurus | |||
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| FAS | |||
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first and second : 33 phrases in 14 subjects |