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vekselsending; serie af alternerende marks and spaces | |||
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halvbølge | |||
alternering; alternation |
alternancias : 30 phrases in 13 subjects |
Communications | 2 |
Construction | 1 |
Economics | 1 |
Education | 7 |
Electronics | 1 |
General | 5 |
Information technology | 1 |
Law | 3 |
Life sciences | 1 |
Mathematics | 2 |
Medical | 1 |
Microsoft | 3 |
Scientific | 2 |