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次级发射
| 光电管
| 次级发射 | |
| space | secondary radiation |
| tech. | secondary emission |
| 光电管 | |
| IT | phototube |
| met. | electric eye; light cell; photocell; photoelectric tube; photoelement |
| rem.sens. | photoelectric cell |
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| secondary radiation | |||
| secondary emission | |||
| |||
| secondary emission | |||
| 次级发射: 23 phrases in 7 subjects |
| Construction | 1 |
| Electronics | 4 |
| General | 1 |
| Physics | 1 |
| Radio | 1 |
| Space | 2 |
| Technology | 13 |