 |
| |||
| zoom lens; variable focus lens | |||
| |||
| zoom | |||
| variable-focal-length lens; variable focus lens; zoom lens; transfocator | |||
| objectif a focale variable: 4 短语, 3 学科 |
| 教育 | 1 |
| 爱好和消遣 | 1 |
| 遥感 | 2 |
|
| |||
| zoom lens; variable focus lens | |||
| |||
| zoom | |||
| variable-focal-length lens; variable focus lens; zoom lens; transfocator | |||
| objectif a focale variable: 4 短语, 3 学科 |
| 教育 | 1 |
| 爱好和消遣 | 1 |
| 遥感 | 2 |