对速度型彩色多普勒技术特点的描述，室遇的是 _（     ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25745' and id < 2163620 and id<>'2163620' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25745' and id > 2163620 and id<>'2163620' order by id asc limit 5