 |
| |||
| 耐燃性塑料 | |||
| |||
| 阻燃性塑料 | |||
| 防火塑料 | |||
| |||
| 防火塑料 | |||
| |||
| 阻燃性塑料 | |||
| flame retardant plastics: 4 phrases in 3 subjects |
| Agriculture | 1 |
| Hydroelectric power stations | 1 |
| Technology | 2 |
|
| |||
| 耐燃性塑料 | |||
| |||
| 阻燃性塑料 | |||
| 防火塑料 | |||
| |||
| 防火塑料 | |||
| |||
| 阻燃性塑料 | |||
| flame retardant plastics: 4 phrases in 3 subjects |
| Agriculture | 1 |
| Hydroelectric power stations | 1 |
| Technology | 2 |