| 词汇 | example_english_secondary-mirror |
| 释义 | secondary mirrorcollocation in Englishmeanings of secondaryand mirrorThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with mirror. secondary adjective uk /ˈsek.ən.dri/ us /ˈsek.ən.der.i/ less important than ... See more at secondary mirror noun uk /ˈmɪr.ər/ us /ˈmɪr.ɚ/ a piece of glass with a shiny, metal-covered back that reflects light, producing an image of whatever is in front ... See more at mirror Examples of secondary mirrorThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Small alignment errors in using the secondarymirror have negligible effect on the final photographs. The secondarymirror position is also actively controlled in three directions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He designed, assembled, tested and delivered diffraction-limited performance in its secondarymirror assembly. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The secondarymirror is mounted on a hexapod support so that its position, tip, and tilt are also computer-controlled. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This obstruction and also the diffraction spikes caused by the support structure (called "the spider") of the secondarymirror reduce contrast. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In contrast, a catadioptric telephoto lens renders bokehs resembling doughnuts, because its secondarymirror blocks the central part of the aperture opening. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The secondarymirror is mounted on a hexapod to increase the side-viewing and ground scanning ability for the originally intended reconnaissance mission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It provides correction of aberrations via a two-element meniscus-shaped corrector lens in front of the secondarymirror. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was to allow the same cell to measure both selective and full field for which the secondarymirror was larger than earlier cameras. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The secondarymirror blank has been constructed and coarse-ground to within 40 m of the desired shape. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A centrally-placed secondarymirror and usually an additional small lens group bring the light to focus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The telescope had a small convex hyperboloidal secondarymirror placed near the prime focus to reflect light through a central hole in the main mirror. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are artifacts caused by light diffracting around the support vanes of the secondarymirror. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has been upgraded, including the installation of a new secondarymirror. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The secondarymirror position is also adjustable in three directions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The unique donut bokeh produced by mirror lenses because of the optical pathway obstruction of the secondarymirror is especially polarizing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The secondarymirror is a convex hyperboloid of 1.24 m diameter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A 3 m secondarymirror produces an unobstructed field-of-view of 20 arcminutes in diameter with a focal ratio of 15. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The comparatively small secondarymirror is 2.74 m in diameter, which will serve active corrections. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The f/ratio is long to have a small secondarymirror, again to minimize the telescope's thermal emission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of secondary Go to the definition of mirror See other collocations with mirror |
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