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| caja para iluminar diapositivas; mesa luminosa; aparato para ver diapositivas (A device used to look at slides and transparencies) | |||
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slide viewer : 1 短语, 1 学科 |
| 通讯 | 1 |
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| caja para iluminar diapositivas; mesa luminosa; aparato para ver diapositivas (A device used to look at slides and transparencies) | |||
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slide viewer : 1 短语, 1 学科 |
| 通讯 | 1 |