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| 阶跃函数信号 | |||
| 阶跃信号 | |||
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| 阶跃函数信号; 阶跃信号 | |||
|
step-function : 34 phrases in 13 subjects |
| Automatic control | 3 |
| Aviation | 1 |
| Business | 3 |
| Economics | 1 |
| Electronics | 3 |
| Hydroelectric power stations | 2 |
| Mathematics | 4 |
| Oil / petroleum | 3 |
| Polymers | 2 |
| Space | 1 |
| Statistics | 1 |
| Technology | 9 |
| Telecommunications | 1 |