| 单词 | heat filter |
| 释义 | > as lemmasheat filter heat filter n. any device that selectively removes heat radiation but permits the passage of light. ΘΚΠ the world > matter > light > artificial light > an artificial light > [noun] > lamp > parts of sink1440 snuff1611 turret1626 discus1680 oxidator1853 chimney1857 flame-cap1893 heat filter1898 bracket-light- 1898 W. E. Woodbury Encycl. Photogr. 367 I have taken a powerful projection lantern and set it as near to the microscope as the intervening heat-filter will permit. 1962 Which? Mar. 68/2 The heat filter prevents much of the heat radiated from the lamp, from reaching the slide. < as lemmas |
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