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column of mercury |
汞柱: 33 phrases in 14 subjects |
Automobiles | 2 |
Aviation | 2 |
Business | 2 |
Drilling | 1 |
Earth sciences | 4 |
Electronics | 1 |
Food industry | 1 |
General | 5 |
Mining | 3 |
Oil / petroleum | 1 |
Refrigeration | 1 |
Shipbuilding | 1 |
Sports | 2 |
Technology | 7 |