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| 双弯管; U型管; U形管 | |||
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| 鹅颈管; S形弯管 | |||
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| Y形管 | |||
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образная труба : 12 phrases in 4 subjects |
| Electronics | 4 |
| General | 2 |
| Mechanic engineering | 1 |
| Technology | 5 |
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