- (of a lens) having concave faces on both sides; concavo-concave
| 单词 | biconcave |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 bi•con•cave (bī kon′kāv, bī′kon kāv′),USA pronunciation adj.
Collins Concise English Dictionary © HarperCollins Publishers:: biconcave /baɪˈkɒnkeɪv; ˌbaɪkɒnˈkeɪv/ adj
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