Aerodist is a useful equipment for secondary breakdown , but not for primary control.航空微波测距仪是测定二等补充网的有效仪器, 但不能用于一等控制网测量....

n.航空微波测距仪...

aerodist的音标：aerodist的英式发音音标为：['eərədɪst]aerodist的美式发音音标为：['eərədɪst]...