名词
中文翻译：Unknown
同义词：
['metallic alloy', 'composite alloy']
例句：
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1. The steel alloy is stronger than the original material.
这种钢铁合金比原来的材料更坚固。
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2. This alloy has a higher melting point than pure gold.
这种合金的熔点比纯金更高。
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3. The car was made from an alloy of aluminum and magnesium.
这辆车是由铝和镁的合金制成的。