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| X〔伦琴〕射线照相术; X光照相术 | |||
| X射线照相术 | |||
| X 射线照相术 | |||
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X -radiography : 7 phrases in 4 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Metallurgy | 4 |
| Space | 1 |
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