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单词 plano-concave
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pla•no-con•cave  (plā′nō konkāv, -kon kāv),USA pronunciation adj. [Optics.]
  1. Opticspertaining to or noting a lens that is plane on one side and concave on the other. See diag. under lens. 
  • plano-1 + concave 1685–95

Collins Concise English Dictionary © HarperCollins Publishers::
plano-concave /ˌpleɪnəʊˈkɒnkeɪv/ adj
  1. (of a lens) having one side concave and the other side plane
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