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| patterned chopping disk; chopper disk; chopping wheel; reticle (patterned chopping disk, which consists of opaque and transparent sections; it breaks up the incoming radiation and converts the incident dc signal into an ac signal; the reticle generates error signals and discriminates between large background sources and smaller target signals) | |||
| modulation grid | |||
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Modulationsscheibe : 2 短语, 1 学科 |
| 光学（物理学分支） | 2 |