| Subject | English | Chinese |
| auto. | basic advance angle | 基准本提前角 |
| tech. | basic angle | 底角 |
| auto. | basic angle system | 基准角系统 |
| avia. | basic angle system | 基本角系统 |
| auto. | basic ignition advanced angle | 基本点火提前角由转速和负荷决定的点火提前角 |
| auto. | basic ignition angle | 基本点火提前角由转速和负荷决定的点火提前角 |
| tech. | basic increment of hour angle | 时角基本量 |