The fretting fatigue behavior of TC4 alloy was investigated using cylinder-plane configuration. Based on the experimental results, the damage mechanism of fretting fatigue failure was discussed.

研究了TC4 合金在柱面-平面接触条件下的微动疲劳行为，分析了其微动疲劳损伤机制。

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The telemetry transmitter is used to keep permanent contact with the plane and supply technical data, flight configuration and positional information.

遥感发射器是用来建立与飞机稳定的通信，提供给飞机技术资料，飞机配置和位置信息。

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This wooden plane is used for configuration ergonomics and correction of drafts.

木质样机是用来对环境工效进行配置以及修正样机的。

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For the first time in the airline's history, business class saw higher percentages of seats filled than coach, said Singapore spokesman James Boyd, so the airline switched to a luxurious all-business-class configuration, with 100 lie-flat beds on a plane big enough to carry more than 300 passengers.

WSJ: The World's Longest Flight, in Coach