名词
中文翻译：中等浓度
同义词：
['medium concentration', 'medium level of concentration']
例句：
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1. The solution needs to be adjusted to a medium concentration before it can be used.
在使用时，溶液需要调整到中等浓度。
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2. The researcher found that the medium concentration of the drug had a significant effect on the patient's recovery.
研究者发现药物的中等浓度对患者的康复有显著影响。
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3.In order to maintain a medium concentration of oxygen in the lungs, the patient must breathe through a mask.
为了保持肺部中氧气的中等浓度，患者必须通过面罩呼吸。