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| Chinese | English |
| 分节［分段］垂直天线 | sectionalized vertical antenna |
| 天线指向调节器 | antenna directional adjuster |
| 线圈节距 | winding pitch |
| 线圈节距 | coil pitch |
| 线性环节 | linear element |
| 线性调节 | linearity control |
| 节点线 | node line |
| 齿轮节线 | pitch curves |
| 齿轮或齿条节线 | pitch line |
| 齿轮节线 | pitch curve |
| 节锥曲线 | pitch curves (伞形齿轮接触面上的交点线) |
| 节锥曲线 | pitch curve (伞形齿轮接触面上的交点线) |
| 非线性环节 | nonlinear element |