名词
中文翻译：中重稀土元素
同义词：
['heavy rare earths', 'heavy rare metals']
例句：
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1.The middle-weight rare earths are crucial for the development of new technologies.
中重稀土元素对于开发新技术至关重要。
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2. The rare earth elements play a significant role in modern electronics.
稀土元素在现代电子学中起着重要作用。
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3. The extraction and processing of these rare earths require advanced technology.
提取和加工这些稀土元素需要先进的技术。