 |
| |||
| level mark, datum line | |||
| home; nought state; zero-access state | |||
| zero position; initial position | |||
| null position | |||
| zero level (of the oscillation) | |||
|
Nullage : 3 短语, 3 学科 |
| 光学（物理学分支） | 1 |
| 冶金 | 1 |
| 测量仪器 | 1 |
|
| |||
| level mark, datum line | |||
| home; nought state; zero-access state | |||
| zero position; initial position | |||
| null position | |||
| zero level (of the oscillation) | |||
|
Nullage : 3 短语, 3 学科 |
| 光学（物理学分支） | 1 |
| 冶金 | 1 |
| 测量仪器 | 1 |