pilot-to-data power ratio 导引符号与数据符号功率比
PNR Pilot Noise Ratio 导频噪声功率比
pilot ratio
飞行员比
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Via the suite of onboard sensors the HUD, originally designed for snow sports, has been customized to display glide ratio, speed and altitude via a micro LCD screen sitting unobtrusively inside the pilot's goggle.
ENGADGET: Recon Instruments offers Flight HUD goggles for wingsuit pilots and skydivers
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