根据光的照度定律，被照物体表面的照度（ ）。与光源投射照射面上的入射角的

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25666' and id < 2157110 and id<>'2157110' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25666' and id > 2157110 and id<>'2157110' order by id asc limit 5