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| 特殊型钢 | |||
| 异型钢材 | |||
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| 异型钢材 (指板桩、轨枕、鱼尾板等特殊型钢) | |||
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special section : 31 phrases in 7 subjects |
| Chemistry | 2 |
| Economy | 1 |
| Electronics | 1 |
| Metallurgy | 14 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 11 |
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