The Swayback Reasons and Controlling Measures of the Tie-in of Welding by One Side-two Sides Taking Shape 单面焊双面成形接头处背凹产生的原因及控制措施
Clinical symptoms of sheep in zones A, B showed that ram and ewe were reduced reproductive performance, steely wolf, fall wool and lamb swayback. A区和B区绵羊临床表现出被毛发焦、脱毛、羔羊出现摇摆病,羊群中母羊发情推迟,公羊配种能力下降。