美国东部时间商务7点24分，航天飞机项目管理人员作出了该决定，原因是因为在外部燃料箱加注燃料时，一个燃料传感器系统发生了故障。

Shuttle program managers made the decision at 7:24 a.m. EST after a failure occurred in a fuel sensor system while Atlantis' external fuel tank was being filled.

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航天发射场的加注系统是提供燃料的重要设备，需要进行可靠性分析和评定，分析影响系统可靠性的因素，确定其可靠度。

Fuel supply system of launch site is a very important system, and its reliability analysis and evaluation is required for analyzing the influence factors and evaluating its reliability.

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燃料电池汽车的推广需要地面加注系统的支持，研制加氢机势在必行。

To popularize fuel cell vehicles, refueling system must be built and hydrogen dispenser must be developed.

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