three-column
| continuous countercurrent ion-exchange
| three columns | |
| polygr. | 三栏排 |
| continuous countercurrent ion exchange | |
| tech. | 连续逆流离子交换 |
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| 三柱式的; 三心柱的 | |||
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| 三栏排 | |||
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three-column : 21 phrases in 11 subjects |
| Accounting | 1 |
| Architecture | 1 |
| Business | 3 |
| Economics | 2 |
| Electric machinery | 1 |
| Finances | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Military | 1 |
| Technology | 6 |
| Textile industry | 2 |