Class B
| amplification
| class B | |
| busin. | B类; B级; 乙类; 乙级 |
| amplification | |
| bridg.constr. | 放 大 |
| econ. | 扩充 |
| geophys. | 放大 |
| math. | 增大、放大率; 引伸 |
| met. | 加强; 增幅 |
| oil | 放大系数; 放大器 |
| |||
| B类; B级; 乙类; 乙级 | |||
| 乙组 | |||
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Class B : 58 phrases in 18 subjects |