Operational Development
| Model
| operational development abbr. | |
| econ. | 战役展开; 展开战斗 |
| oil | 改进性研制 |
| model abbr. | |
| gen. | 模特; 型; 模特儿; 塑像; 做模型 |
| audio.el. | 机型 |
| environ. | 模型 |
| hydroel.st. од. | 模型 |
| met. | 原型 |
| |||
| 战役展开; 展开战斗 | |||
| 改进性研制 | |||
| 产品改进性研制; 运行改进 | |||
|
Operational Development : 13 phrases in 5 subjects |
| Aviation | 5 |
| Economics | 2 |
| Electronics | 2 |
| Name of organization | 2 |
| Space | 2 |