| Subject | English | Chinese |
| met. | grain sub-boundary | 晶粒亚晶界 |
| met. | pattern of sub-boundary | 亚晶界图样 |
| phys. | sub-boundary | 亚晶界 |
| met. | sub-grain boundary | 次级晶粒间界 |
| met. | sub-grain boundary | 亚晶界 |
| environ. | sub-national boundary The line demarcating a territory located within the limits of a State | 州界、省界 (一国范围内划定的界限。) |