英语词汇“rich-field”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

rich-field adj. Astronomy designating a telescope with a short focal length giving optimum wide-angle, low-power views of faint and extended objects such as nebulae, galaxies, and star fields.

ΚΠ

1938 N.Y. Times 25 Dec. ii. 9/6 Known as the Rich-field type, the unusually short focus of the telescope allows for a wide and bright field rather than a great magnifying of stellar objects.

1957 Sci. Monthly Dec. p. ii/2 (advt.) Use as a Rich-field Scope for viewing star clusters.

1979 Globe & Mail (Toronto) (Nexis) 10 Dec. Best for viewing deep-sky objects is a rich-field telescope, either a reflector or refractor that use relatively low magnification but give a wide, clear field of view.

2002 Sci. News 7 Dec. 368/2 (advt.) Large 4¼″ clear aperture Newtonian Rich-field reflector that provides a breathtaking 3° field.

单词	rich-field
释义	> as lemmas rich-field rich-field adj. Astronomy designating a telescope with a short focal length giving optimum wide-angle, low-power views of faint and extended objects such as nebulae, galaxies, and star fields. ΚΠ 1938 N.Y. Times 25 Dec. ii. 9/6 Known as the Rich-field type, the unusually short focus of the telescope allows for a wide and bright field rather than a great magnifying of stellar objects. 1957 Sci. Monthly Dec. p. ii/2 (advt.) Use as a Rich-field Scope for viewing star clusters. 1979 Globe & Mail (Toronto) (Nexis) 10 Dec. Best for viewing deep-sky objects is a rich-field telescope, either a reflector or refractor that use relatively low magnification but give a wide, clear field of view. 2002 Sci. News 7 Dec. 368/2 (advt.) Large 4¼″ clear aperture Newtonian Rich-field reflector that provides a breathtaking 3° field. extracted from richadj.n.adv. < as lemmas
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> as lemmas