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| preliminary stage | |||
| preliminary phase | |||
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| elementary step | |||
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初 步 阶段 : 32 phrases in 13 subjects |
| Architecture | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Commerce | 2 |
| Compressors | 1 |
| Construction | 2 |
| Consulting | 1 |
| Economy | 2 |
| Electronics | 3 |
| Engineering geology | 2 |
| Metallurgy | 1 |
| Space | 8 |
| Technology | 7 |
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