sum and difference
| patterns
| sum-and-difference | |
| gen. | 和差 |
| pattern | |
| gen. | 图案; 格局 |
| fig.skat. | 花样 |
| hydroel.st. | 图形 |
| hydroel.st. од. | 模式 |
| met. | 图; 样品; 晶格 |
| rem.sens. | 样式 |
| |||
| 和差 | |||
|
sum and difference : 6 phrases in 5 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 2 |