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focusing screen
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可把摄影镜头所会聚来的被摄景物成像光线,在其磨砂面处结成清晰影像,以供进行取景构图与精确调焦的磨砂玻璃屏幕。又称磨砂玻璃调焦屏、聚焦屏。
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magnesium zinc oxide
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Magnetherm process
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magnetic agglomeration gravity separator
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更新时间:2026/10/7 13:28:28