名词中文翻译
中文翻译：正密度
同义词：
['positive concentration', 'positive concentration ratio']
例句：
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1. The positive density of the solution is 0.8 g/ml.
溶液的正密度为0.8克/毫升。
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2. The positive density of the soil is 1.5 g/ml.
土壤的正密度为1.5克/毫升。
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3. The positive density of the oil is 0.9 g/ml.
油的正密度为0.9克/毫升。