名词
中文翻译：化学的
同义词：
['chemical', 'physico-chemical', 'biochemical']
例句：
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1. The chemical compositionof the sample is unknown.
样品的化学成分未知。
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2. The chemical reaction between hydrogen and oxygen is exothermic.
氢和氧之间的化学反应是放热的。
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3. Chemical analysis is essential for understanding the properties of materials.
化学分析对于理解材料的性质至关重要。