 |
| |||
| caterpillar tractor; crawler tractor; track-laying tractor; track-type tractor; tracked tractor | |||
|
tractor cadena : 10 短语, 3 学科 |
| 农业 | 1 |
| 自然科学 | 1 |
| 运输 | 8 |
|
| |||
| caterpillar tractor; crawler tractor; track-laying tractor; track-type tractor; tracked tractor | |||
|
tractor cadena : 10 短语, 3 学科 |
| 农业 | 1 |
| 自然科学 | 1 |
| 运输 | 8 |