，插
疡;There is affinitive relationship between the incidence of varix of lower limb and long-term working on their feet、extended length of service、insufficiency of protective countermeasure, respectively.
下肢
张
发生率与长期站立工作、工龄长短及防护措施不力有密切关系。
张；螺层There is affinitive relationship between the incidence of varix of lower limb and long-term working on their feet、extended length of service、insufficiency of protective countermeasure, respectively.
下肢张发生率与长期站立工作、工龄长短及防护措施不力有密切关系。
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