“optical recording”的概念、定义、翻译、参考文献-科学参考

单词	optical recording
释义	optical recording [`äp·tǝ·kǝl ri`kȯrd·iŋ] ^ENGINEERING Production of a record by focusing on photographic paper a beam of light whose position on the paper depends on the quantity to be measured, as in a light-beam galvanometer.
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