名词
中文翻译：推进剂水平指示器同义词
同义词：
['推进剂水平指示器，推进剂水平指示器，推进剂水平指示器']
例句：
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1. The propellant level indicator is used to monitor the amount of fuel in the engine.
推进剂水平指示器用于监测发动机中的燃料量。
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2. The engineers monitored the propellant level indicator to ensure that the spacecraft was operating safely.
工程师们监控推进剂水平指示器以确保宇宙飞船安全运行。
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3. The propellant level indicator showed that the fuel tank was running low, so they needed to refuelimmediately.
推进剂水平指示器显示燃料箱已耗尽，所以他们需要立即加注燃料。