该方案灵活可变，具有一定的扩展性和通用性，成功地应用于燃料电池汽车DC/DC变换器的温度测试系统中。
The resolution, which is flexible, expandable and general, is successfully introduced into the temperature testing system for DC/DC converter in fuel cell electric vehicle.
工程人员讲到，要耗费几天时间去更换和测试开关盒，以确保燃料管道加热器正常运转。 上周五，仅在发射前几小时，“奋进号”飞船的发射被取消了。
Engineers say it will take several days to replace and test that switch box to ensure fuel line heaters are functioning properly.
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