名词
中文翻译：Unknown
同义词：
['alkali metal alloy', 'alkali metal blend']
例句：
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1. The alkaline earth metals are used in the production of steel.
碱土金属用于钢铁生产。
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2. The alkaline earth metals have unique properties that make them useful in many applications.
碱土金属具有独特的性质，使其在许多应用领域中非常有用。
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3. The alkaline earth metals are often used as a source of energy in nuclear reactors.
碱土金属通常作为核反应堆的能量来源。