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压力曲线图 | |||
压力图 | |||
水压图 |
pressure diagram : 50 phrases in 14 subjects |
Agriculture | 3 |
Automobiles | 5 |
Bridge construction | 4 |
Chemistry | 2 |
Compressors | 2 |
Earth sciences | 4 |
Hydroelectric power stations | 3 |
Metallurgy | 1 |
Mining | 2 |
Oil / petroleum | 1 |
Plastics | 2 |
Refrigeration | 5 |
Space | 1 |
Technology | 15 |