air-distance recorder [航] 飞行距离记录器
AD Air Distance 空中距离 ; 空中飞行距离
air distance recorder 飞行距离记录器
air-to-air distance measuring 空
air-to-air distance measurement 空
Australia and Kenya air distance 澳大利亚和肯尼亚空中距离
air line distance 直线距离 ; 航空线距离 ; 架空线路距离
Fans: high efficiency, high reliability and low noise centrifugal fan, the wind a large amount of air distance and easy maintenance.
风机：采用高效率、高可靠性和低噪音的离心风机，风量大，送风距离远，维护方便。
When someone sneezes (打喷嚏) or coughs, the viruses can travel as far as one meter through the air, so you'd better stand a proper distance while talking to someone who has a cold.
当有人打喷嚏或咳嗽时，病毒可以在空气中传播一米远，所以你在与感冒患者交谈时最好站在适当的距离。
The system's imprecision obliges controllers to keep more distance between air traffic, reducing the number of planes that can fly in the available space.
而该系统精准度不高，管理员被迫必须拉大飞机间的距离，从而导致可利用空间内可容纳的飞机数量下降。
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