brachytherapy
发表于 2025-3-21 19:07:46
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收藏品
发表于 2025-3-21 21:33:59
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Irritate
发表于 2025-3-22 04:03:16
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Oafishness
发表于 2025-3-22 05:51:43
Specialized UHV Systemsy one or two orders of magnitude, 100 h after machine shutdown, by employing Al instead of stainless steel. For electron synchrotron machines and electron storage rings, aluminum is preferred because of good thermal conductivity, ease of manufacture by extrusion, low residual radioactivity, nonmagne
轻浮思想
发表于 2025-3-22 12:45:49
Phosphor Screens is a variant of techniques originally described for coating cathode ray tube screens and field emission microscope screens Rosebury (Handbook of Electron Tube and Vacuum Technique. American Institute of Physics, New York, pp. 251–254, .), Millman (Vacuum-tube and Semiconductor Electronics. McGraw-H
节省
发表于 2025-3-22 13:57:26
Shieldingby the Earth or by magnets associated with ion pumps or other devices near the vacuum system. A number of formulas have been presented for the calculation of the efficiency of a magnetic shield (Mager in IEEE Trans Mag 67, ., Mager in J Appl Phys 39:1914, ., Gubser et al. in Rev Sci Instrum 50:751,
节省
发表于 2025-3-22 18:27:27
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OVER
发表于 2025-3-23 01:15:19
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肉体
发表于 2025-3-23 04:03:56
Geoecological Risk Management in Polar Areasute of Physics, New York, p. 167, .). The method may be used for either glass-based phosphor screens, which are viewed by transmission from the back side, or metal-based screens, which are viewed from the front side Flynn-Sanders et al. (J Vac Sci Technol A10:413, .).
大方一点
发表于 2025-3-23 08:31:17
Phosphor Screensute of Physics, New York, p. 167, .). The method may be used for either glass-based phosphor screens, which are viewed by transmission from the back side, or metal-based screens, which are viewed from the front side Flynn-Sanders et al. (J Vac Sci Technol A10:413, .).