human kevlar
人类的凯夫拉尔
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This time, they used exotic materials to lower its weight, which included the then-new technique of creating carbon fiber tubes, and Kevlar -- a first for a Human Powered Aircraft (HPA).
ENGADGET: The Highs and Lows of Human-Powered Flight Alt
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