Professional Development
| Hours
| professional development | |
| libr. | 专业发展 |
| hour | |
| archit. | 时; 钟点; 时间 |
| dril. | 小时绳 |
| met. | 时间; 时机 |
| tech. | 小时 |
| hours | |
| busin. | 时间 |
| econ. | 时 |
| oil | 小时 |
| |||
| 专业发展 | |||
|
Professional Development : 14 phrases in 12 subjects |
| Aviation | 1 |
| Business | 2 |
| Earth sciences | 1 |
| Economics | 1 |
| Electronics | 1 |
| General | 1 |
| Labor law | 1 |
| Law | 1 |
| Mining | 1 |
| Name of organization | 2 |
| Space | 1 |
| Wind Energy | 1 |