ifr route meaning in Chinese

仪表飞行规则航线

" hong kong and macau are amongst the few places in the world with established ifr routes and procedures for helicopters serving the two cities , " the spokesman added
发言人说：港澳两地是全球少数采用直升机专用仪表飞行的地区之一。
Before the implementation of ifr routes and procedures , helicopter services between hong kong and macau were operated only when weather conditions satisfied the visual flight rules . flights were sometimes delayed or even cancelled due to inclement weather
在仪表飞行规则路线及程序获准采用前，来往港澳之间的直升机只可在天气容许目视飞行的情况下运作，直升机服务偶会因天气恶劣而延迟或取消。
" with the implementation of the ifr procedures , pilots can utilise signals from ground navigation aids and fly along the designated ifr routes even when the visibility precludes visual flights . the regularity of the helicopter service between hong kong and macau is therefore improved , " the spokesman said
他说：仪表飞行规则程序获准使用后，即使能见度低至不可能靠目视飞行，飞行员仍可根据地面导航仪器所发出的信息，以设定的仪表飞行规则路线飞行，令来往港澳之间的直升机服务更有规律。