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| 膜片式流量计 | |||
| 干式煤气表; 膜片式计量器; 隔膜流量表; 薄膜式煤气表 | |||
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| 膜式流量计; 孔板流量计 | |||
| diaphragm meter: 8 phrases in 3 subjects |
| Metallurgy | 2 |
| Refrigeration | 1 |
| Technology | 5 |
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