- collimating grid
- 准直栅格
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Diffraction — Computer generated intensity pattern formed on a screen by diffraction from a square aperture … Wikipedia
Schiehallion experiment — Schiehallion s isolated position and symmetrical shape lent well to the experiment The Schiehallion experiment was an 18th century experiment to determine the mean density of the Earth. Funded by a grant from the … Wikipedia