In Section II, relaxation processes and relaxation time in resonance were introduced. The contrast of proton density is one of the techniques to characterize different tissues.是什么意思_In Section II, relaxation processes and relaxation time in resonance were introduced. The contrast of proton density is one of the techniques to characterize different tissues.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句