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| bitter earth; magnesia (【技】镁砂：菱镁矿等镁质原料经高温处理达到烧结程度产物的统称。一般分为烧结镁砂、电熔镁砂和海水镁砂。镁砂是耐火材料最重要的原料之一，用于制造各种镁砖、捣打料、补炉料等。) | |||
| magnesium oxide | |||
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| magnesia | |||
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| bitter earth | |||
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| magnesium oxide | |||
| 苦土: 49 phrases in 9 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| General | 5 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Technology | 34 |
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