音標：[ hángkōng ] 讀音:"航空"怎麼讀"航空"的漢語解釋
- Aviation was lamentably weak and primitive .
- I want to send this letter by registered air-mail .
- How much is an air-mail registered letter to new york ?
- Air photos are widely used in the search for petroleum .
- The maritime passage was a good augury for the aerial passage .
- Bleaching effects are very strong and show on air photos .
- For the same reason air information is printed in magenta .
- The airline pulled out all the stops to get him there in time .
- The airborne magnetic gradiometer came into use in the middle 1960s .
- This fact has been fully appreciated as a consequence of airborne surveys .