square-loop
| ferrite
| square loop | |
| tech. | 矩形回线 |
| ferrite | |
| compr. | 纯铁体 |
| desert. | 自然铁 |
| dril. | 亚铁酸盐 |
| life.sc. | 铁酸盐 |
| met. | 铁氧体; 铁淦氧 |
| met. од. | 铁素体 |
| oil | 纯粒铁; 铁质岩 |
| space | 铁酸盐 |
| |||
| 矩形回线 | |||
|
square-loop : 11 phrases in 4 subjects |
| Electronics | 4 |
| Metallurgy | 2 |
| Technology | 4 |
| Telecommunications | 1 |