| |||
| 底，副基层; 底盘座; 辅助机场〔基地〕 | |||
| 数学子基 | |||
| 底层; ★ 底基层; 地基; 基础下卧层 | |||
| 基底; 基层; 底座 | |||
| ★ 基层下层; 基层下卧层 | |||
| 底基 (层); 基床; 土基; 底盘座; 踢脚板; 墙裙板; 路面底层; ★ 副基层 | |||
| ★ 子基 | |||
|
Subbase : 61 phrases in 9 subjects |
| Agriculture | 1 |
| Architecture | 2 |
| Bridge construction | 1 |
| Construction | 2 |
| Ecology | 3 |
| Engineering geology | 2 |
| Hydroelectric power stations | 3 |
| Technology | 46 |
| Telecommunications | 1 |