| 单词 |
littrow grating spectrograph |
| 释义 |
Littrow grating spectrograph Littrow grating spectrograph[′li‚trō ¦grād·iŋ ′spek·trə‚graf] (spectroscopy) A spectrograph having a plane grating at an angle to the axis of the instrument, and a lens in front of the grating which both collimates and focuses the light. |
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