| 普通话 | cmn-000 |
| 啮合线 | |
| English | eng-000 | action line |
| English | eng-000 | contacting line |
| English | eng-000 | line of action |
| English | eng-000 | line of contact |
| English | eng-000 | line of engagement |
| English | eng-000 | path of contact |
| English | eng-000 | path of countact |
| English | eng-000 | pressure line |