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| чилийская рудная селитра (含硝酸盐的碎砾或产于智利和秘鲁的硝酸钠沉积岩) | |||
| селитренная порода; мергель | |||
| 生硝: 5 phrases in 4 subjects |
| General | 1 |
| Medical | 1 |
| Oil processing plants | 1 |
| Technology | 2 |
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