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wolfram
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钨锰铁矿,钨
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详细解释：
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以下为句子列表：
英文: The product vacuum arcing chamber adopts porcelain insulation case, the contactor adopts wolfram and copper material, it has the advantage of reliable performance, long life, small volume, no explosion danger, no pollution environment.
中文: 该型号真空灭弧室采用陶瓷绝缘外壳，触头采用钨铜材料，具有性能可靠、寿命长、体积小、无爆炸危险，不污染环境等优点。
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英文: Wolfram reports that it would cost a car company more than $1200 per unit to buy the far infrared system in quantity, while the near infrared system costs carmakers just $300 or so.
中文: 沃尔弗拉姆认为，汽车制造商购买远红外系统，每辆车需花费超过1200美元，而近红外系统只需要花费300美元左右。
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