four-node
| oscillation
| four-node | |
| gen. | 四波节 |
| oscillation | |
| hydroel.st. | 摆动; 波动 |
| interntl.trade. | 颤动 |
| math. | 振荡，振幅，震动 |
| space | 振荡 |
| stat. | 周期变动; 周期运动; 周期性波动; 循环变动周期性波动 |
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| 四波节 | |||
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four-node : 4 phrases in 3 subjects |
| Electric machinery | 1 |
| Electronics | 1 |
| Technology | 2 |