optical flat

短语

[医] 光学玻璃板

词形变化

optical flats 复数 optical flats

释义与例句

n.
  1. 1.

    A disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.

    工程 物理