| Subject | English | Chinese |
| scient. | second mark | 秒的符号"：3° 5' 30"读作 three degrees five minutes and thirty seconds 3度5分30秒 |
| tech. | second order bench mark | 二等水准标点 |
| tech. | second order bench mark | 二等水准基点 |
| gen. | second-mark | 秒号" |
| tech. | second-order bench mark | 二等水准标点 |
| survey. | second-order bench mark | 二等水准点 |
| tech. | second-order bench mark | 二级水准点 |