名词短语中文翻译
中文翻译：恒定水平气球
同义词：
['常量水平气球例句：1. The constant level balloon was used to measure the air pressure in the room.（这个常量水平气球被用来测量房间里的气压。）']
例句：
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1. The constant level balloon was used to measure the air pressure in the room.
这个常量水平气球被用来测量房间里的气压。
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2.The constant level balloon was used to monitor the temperature of the liquid.
这个常量水平气球被用来监测液体的温度。
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3. The constant level balloon was used to create a stable environment for the experiment.
这个常量水平气球被用来为实验创造一个稳定的环境。