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| 21. | luminescent spectrum |
| 发光光谱 |
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| 22. | threshold of luminescence |
| 发光界限 |
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| 23. | lube indicator board |
| 发光指示板 |
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| 24. | luminous compound |
| 发光化合物 |
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| 25. | luminescence exitation spectrum |
| 发光激发光谱 |
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| 26. | luminescent organ |
| 发光器 |
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| 27. | luminescent activator |
| 发光活化剂 |
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| | |
| 28. | luminescent waveform |
| 发光波形 |
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| 29. | luminescent effect |
| 发光效应 |
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| 30. | luminous gas flame |
| 发光气焰 |
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