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| 一点一划; 无线电发送电码点划线 | |||
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dot- dash : 35 phrases in 15 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Clothing | 1 |
| Construction | 1 |
| Desert science | 1 |
| Drilling | 2 |
| Electronics | 2 |
| General | 4 |
| Metallurgy | 2 |
| Oil / petroleum | 2 |
| Skydiving | 1 |
| Technology | 12 |
| Telecommunications | 2 |
| Textile industry | 2 |