... field of view selector assembly 视场选择装置 field of view sop 视场阑 field view stop 视场阑 ...
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视场光阑 [光] field stop ; field diaphragm ; field view stop ; view stop
光源的视场光阑 Luminous Field diaphragm
视场光阑-调制盘组合 sield-stop reticule combination
将视场光阑 field iris diaphragm
照明视场光阑 illuminated field diaphragm
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