RE: 飞机上的“黑匣子”

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飞机上的“黑匣子”

in hive-180932 •  3 days ago 

Wow... This is a very educative content.
Thanks for giving us more insight about plane's black box.

hive-180932
3 days ago by

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      ·  3 days ago 

    Good 👍 this is very nice content

    Downvoting a post can decrease pending rewards and make it less visible. Common reasons:

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