Orion is moving ever-closer to its first trip into space, with the Exploration Flight Test -1 (EFT-1) still on track for September, 2014.

猎户座正在日益密切，其首次太空之旅，与探索的飞行测试-1（EFT-1），仍然按2014年九月的预定计划推进。

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A major milestone for Orion is expected totake place in 2014, when a Delta IV-Heavy lofts the spacecraft on its firsttrip into space on the Exploration Flight Test-1 (EFT-1) mission.

猎户座一个主要里程碑发生在2014年，三角洲IV重型推升的航天器第一次太空之旅的探索飞行测试-1（EFT-1），任务。

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The electrical fast transient (EFT) disturbance test is one of the most difficult tests, because it is a fast uprising, repetitive pulse group.

介绍了电能表在进行电快速瞬变脉冲群(eft)抗扰度试验时的一种脉冲个数测量方法。

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