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| 铜锌锡铝铁的合金; 杜拉合金 | |||
| 杜兰纳合金; 杜兰纳黄铜; 杜兰纳铜锌合金; 杜兰纳铜锌锡铝铁合金 | |||
| 杜兰纳合金一种铜，锌，锡，铝，铁合金; 杜兰钠黄铜 | |||
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| 杜氏合金 (铜锌合金); 杜拉钠合金 | |||
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| 杜拉合金 (铜锌锡铝铁的合金, дурана металл) | |||
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| 杜兰纳合金一种铜，锌，锡，铝，铁合金 | |||
| дурана металл: 2 phrases in 1 subject |
| Technology | 2 |
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