您要查找的是不是：
- catenary correction(钢尺的)垂曲改正
- sag correction (测量带尺的)中沉校准
- 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.
- wet-line correction (水文测验的)湿绳校正
- 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.
- dynamic(al) correction (正常时差校正)动校正
- 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?
- MTP 第 1 级 is the error correction signaling data link （对还是错?）MTP Level 1 is the error correction signaling data link (true or false?)
- 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.
- MTP 第 1 级 is the error correction signaling data link (对还是错?)MTP Level 1 is the error correction signaling data link (true or false?)
- 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
- 实现了JFM386EX航天计算机的EDAC(Error Detection and Correction)功能;The JFM386EX aerospace computer systemcomplete the EDAC (Error Detection and Correction ) function.
- 当时航空仍在萌芽阶段。At that time aviation was still in its infancy.
