名词
中文翻译：水银气压计
同义词：
['hydrometer', 'barometer']
例句：
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1.The hydrometer was used to measure the density of the liquid.
水银计用于测量液体的密度。
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2. The barometer is crucial for predicting weather patterns.
气压计对于预测天气模式至关重要。
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3. The hydrometer showed that the temperature had dropped significantly.
水银计显示温度已经显著下降。