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| Chinese | English |
| 大地测量 | geodesy A subdivision of geophysics which includes determination of the size and shape of the earth, the earth's gravitational field, and the location of points fixed to the earth's crust in an earth-referred coordinate system (地球物理学分支，主要包括决定地球的性状和大小，地球的引力场，地球坐标系统中地壳中的固定点位置。) |
| 大气质量标准同盟 | Air Quality Standards Coalition |
| 大气辐射测量 | atmospheric radiation measurement |
| 最大允许剂量 | maximum permissible dose |
| 最大允许剂量 | maximum allowable dose |
| 零质量大气 | zero air mass |