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。