myriad
发表于 2025-3-27 00:42:29
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farewell
发表于 2025-3-27 04:29:50
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彩色的蜡笔
发表于 2025-3-27 08:50:01
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骚动
发表于 2025-3-27 11:31:01
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Anticoagulant
发表于 2025-3-27 16:08:19
Image Quality in Mammography: Physical and Technical Limitations,enuation of the various soft tissue structures in the female breast are small, and it is necessary to use X-rays with low photon energy in order to get a sufficiently high contrast in the mammographic film. Jennings and Fewell (1979) examined the relative exposure necessary to achieve a constant sig