Etching
发表于 2025-3-26 22:47:50
W. Murray Wonhamculated for various ultrasound positions in the pulmonary artery at 12 and 20 MHz. Signal loss ranged from -47 to -100 dB and -53 to -104 dB for these frequencies. In this manuscript we have outlined the value of a mechanical catheter centring device in the vessels, and we have suggested two techniq
VERT
发表于 2025-3-27 04:56:49
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土坯
发表于 2025-3-27 08:19:50
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–DOX
发表于 2025-3-27 12:04:19
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补角
发表于 2025-3-27 16:01:36
Satish Namdev,Anand Pandey,Arun Kumar Pandey,Rakesh Kumar,Ashish Goyal
神秘
发表于 2025-3-27 21:07:05
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