STDL | network design
| function
| network design abbr. | |
| el.mach. | 电网设计 |
| survey. | 控制网设计 |
| function abbr. | |
| gen. | 运行; 工作 |
| hydroel.st. | 作用 |
| interntl.trade. | 效用; 职能 |
| light. | 功能，用途 |
| math. | 运算 |
| met. | 功用; 用途 |
|
STDL : 2 phrases in 1 subject |
| Air defense | 2 |