industrial rolling needle 工业滚针
needle rolling bearing 滚针轴承
rolling g needle 滚针
Cage And Needle Rolling Assembly 无套圈有保持架滚针轴承
·2,447,543篇论文数据，部分数据来源于NoteExpress
Methods Multi-central randomized blind controlled trials were used, and 180 cases were randomly divided into a rolling needle group and a medication group, 90 cases in each group.
方法：采用多中心随机盲法对照试验，180名患者随机分成滚针组和药物组各90例。
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