| Subject | English | Chinese |
| avia. | Beijing Precision Engineering Institute for Aircraft Industry | 北京航空精密机械研究所 |
| environ. | precision engineering Research and development, design, manufacture and measurement of high accuracy components and systems. It is related to mechanical, electronic, optical and production engineering, physics, chemistry, and computer and materials science | 精密工程 (研究、开发、设计、制造高精度部件和测量系统。它关系到机械、电子、光学和生产，以及物理、化学、计算机和材料科学。) |
| tech. | precision engineering | 精密工程 |
| tech. | precision engineering survey | 精密工程测量 |