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| 管道复盖 | |||
| 管道隔热包层 | |||
| 管道保温 | |||
| 管套; 管道覆盖物; 管子覆盖; 管外保护层; 管顶覆盖层; 管道保温层; 管覆盖层 | |||
| |||
| 管套 | |||
| 管壳 | |||
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pipe covering : 18 phrases in 5 subjects |
| Agriculture | 1 |
| Hydroelectric power stations | 5 |
| Rail transport | 2 |
| Refrigeration | 2 |
| Technology | 8 |
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