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| T 形接头; T 形管 | |||
| 三通; 丁字管; T形片; T形接头; T形管; 丁字管三通 | |||
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| 三通〔T 形〕管 | |||
| 三通 | |||
| T形接头; T 形接头; 三通管 | |||
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tee piece : 5 phrases in 3 subjects |
| Ecology | 1 |
| General | 3 |
| Technology | 1 |
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