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1.The aerospace industry relies heavily on the development of aviation fuel pumping units for its operations.
航空航天行业高度依赖航空燃料泵送单元的开发，以支持其运营。
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2. The engineers at the research institute have been working on developing new aviation fuel pumping units to improve efficiency.
研究所的工程师一直在努力开发新的航空燃料泵送单元，以提高效率。
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3. The latest model of the aviation fuel pumping unit has been launched, offering more advanced features and better performance.
最新的航空燃料泵送单元模型已经推出，提供了更先进的功能和更好的性能。