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| 环板; 波域片 | |||
| 波带板 | |||
| 波带片 | |||
| 同心圆绕射板 | |||
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| 波带〔波域〕片; 同心圆绕射板 | |||
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zone -plate : 32 phrases in 8 subjects |
| Earth sciences | 1 |
| Electronics | 9 |
| Geology | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 3 |
| Space | 3 |
| Technology | 13 |
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