数字化彩色多普勒超声仪性能高、功能多的关键技术是: A.宽频技术 B.变频技术 发布时间:2017-06-14 02:29 │ 来源:www.tikuol.com 题型:单项选择题 问题: 数字化彩色多普勒超声仪性能高、功能多的关键技术是: A.宽频技术 B.变频技术 C.探头阻抗匹配技术 D.信号处理技术 E.数字波束形成及聚焦
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