直觉好
发表于 2025-3-25 04:20:21
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清楚
发表于 2025-3-25 11:19:51
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ventilate
发表于 2025-3-25 12:28:54
Mirror Systems for X-Ray Telescopes,ge collecting area with small detector dimensions, which decreases the technical difficulties to a considerable extent and increases the signal-to-noise ratio; on the other hand, reflecting objectives open up the possibility in principle of obtaining an image analogous to that provided by telescopes in the visible region of the spectrum.
杂役
发表于 2025-3-25 18:04:57
Optical Systems of On-Board Submillimeter Telescopes,rst of all examine some properties of the optical systems of on-board submillimeter telescopes; then, having selected a specific system answering our requirements, we will examine possible variants of its realization and give the method and results of the calculation of these variants.
Ankylo-
发表于 2025-3-25 23:38:53
A Parabolic Radio Telescope Antenna with a Radially Balanced Main Mirror,he refocusing of the mirror system should not occur when the antenna rotates about the horizontal axis of the supporting-rotating mechanism as a result of displacements of elements of the exciter system in the longitudinal and transverse directions.
相符
发表于 2025-3-26 00:55:42
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HAWK
发表于 2025-3-26 04:49:11
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预防注射
发表于 2025-3-26 11:34:08
Adjusted Deformations of Mirror Systems of Fully Steerable Radio Telescopes,The ever more complex problems of radio astronomy and distant, including space, radio communication require a further increase in the efficiency of radio telescopes, i.e., an increase in their resolving power and sensitivity.
initiate
发表于 2025-3-26 16:42:04
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HERE
发表于 2025-3-26 19:25:05
The RTI-7.5/250 Reflecting Radio Telescope with a Fully Steerable Parabolic Antenna,The well-known achievements of observational radio astronomy in the last 10–15 years are to a considerable extent due to the equipping of radio astronomical observatories with the instrumental technology and primarily with the highly efficient radio telescopes of various systems and constructions.