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方〔矩形〕波 | |||
直角波 | |||
方波 | |||
矩形波 | |||
方形波 | |||
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方〔矩形〕波 |
square -wave : 72 phrases in 14 subjects |
Air defense | 7 |
Aviation | 2 |
Chemistry | 2 |
Earth sciences | 2 |
Electronics | 11 |
Hydroelectric power stations | 1 |
Metallurgy | 4 |
Nursing | 1 |
Oil / petroleum | 2 |
Space | 3 |
Surgery | 1 |
Technology | 34 |
Telecommunications | 1 |
Water resources | 1 |