研究背景： 新型超声造影剂的制备及应用研究是近年来超声医学研究的热点和前沿。
The study of ultrasonic contrast agents is a pop subject in modern medical science.
生物化学作为一门实验性基础医学学科，是生命科学的基础和前沿。
Biochemistry is a basis experimental course, is the basis and foreland of life science.
生物化学作为一门实验性基础医学学科，是生命科学的基础和前沿。
Biochemistry is a basis experimental course, is the basis and foreland of life science.
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