| |||
| 双缸对置〔平列双排〕发动机; 扁形双芯电缆 | |||
| 双缸卧式发动机 | |||
| |||
| 双面 (雷达，苏联反弹道导弹 X-3 跟踪雷达的北约代名) | |||
|
flat twin : 6 phrases in 2 subjects |
| Automobiles | 1 |
| Technology | 5 |
| |||
| 双缸对置〔平列双排〕发动机; 扁形双芯电缆 | |||
| 双缸卧式发动机 | |||
| |||
| 双面 (雷达，苏联反弹道导弹 X-3 跟踪雷达的北约代名) | |||
|
flat twin : 6 phrases in 2 subjects |
| Automobiles | 1 |
| Technology | 5 |