丂丂丂嬈柋丒嵿柋帒椏摍
戄庁懳徠昞 帠嬈曬崘
帠嬈曬崘彂 嵿柋彅昞
戄庁懳徠昞惓枴嵿嶻憹尭寁嶼彂
戄庁懳徠昞 俀俋擭搙帠嬈寁夋
倐倎們倠倐倎們倠
丂丂丂丂丂丂丂丂丂丂
堦斒嵿抍朄恖峲嬻曐埨尋媶僙儞僞乕
俙俿俽俼俬
Air Traffic Service Research Institute