单词 | opal plate |
释义 | > as lemmasopal plate opal plate n. a plate of opal glass; esp. (formerly) one used as a photographic plate (obsolete). ΚΠ 1876 Scribner's Monthly Nov. 138/1 The opal plate and the print..are immersed in water. 1933 Philos. Trans. (Royal Soc.) B. 222 137 The 3 cm. hole in the bottom of the vessel..was closed by the opal plate. 1978 Science 23 June 1393/1 A dark-adapted frog retina was mounted in a double window chamber with an opal plate. < as lemmas |
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