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- D＝1.density 密度
- 请即办理并航空函复。 Please act promptly and let us have your reply by return airmail.
- material density (人口) 实质密度
- 舰队正在和航空进行部队联合演习。 The fleet is manoeuvring in combination with the air unit.
- 请给我买几张航空邮票。 Please buy some air mail stamps for me.
- packing density (粒状材料) 堆积密度
- fibre-end density (牵伸区的) 纤维端密度
- 用航空寄还是海运寄呢? Airmail or sea mail?
- in-situ density(不采样测定的密度) 原地密度
- 我要一封普通邮票和两封航空邮票。 I need a book of regular stamp and two of airmail.
- 我想往法国寄一封航空挂号信。 I want t send a registered airmail letter to France.
- scanning line density (单位：线／毫米) 扫描线密度
- 当时航空仍在萌芽阶段。 At that time aviation was still in its infancy.
- density control (控制现场浇注混凝土的密实度) 密实度控制
- 航空照片可供市民选购。 Aerial photographs are available for sale to the public.
- wool fiber density (羊身单位面积内的羊毛根数) 羊毛纤维稠密度
- 航空像片森林判读 interpretation of forest aerial photo
- 航空电器 airborne electric apparatus
- 这封信以航空邮寄到台北要花多少钱? How much will it cost to send this letter airmail to Taibei?
- 中国航空研究院 Chinese Aeronautical Establishment, CAE
