单词	back focus
释义	back focus noun : the distance from the rear glass surface of a photographic lens to the focal plane when the lens is focused on a very distant object Word History First Known Use 1868, in the meaning defined above
随便看	maculate maculated maculates maculating maculation maculations maculature macule maculed macules maculi- maculicole maculicolous maculing maculo- maculose macumba macumbas macupa Macushi macushis macushla macushlae macushlas macusi

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