起重機的吊鉤為什麼不能補焊
？

起重機的吊鉤為什麼不能補焊?

qizhongjidiaogouyouliewenpokouhuomosunyanzhongshi
，bixugenghuan，bunengbuhan。qiyuanyinyouer
，qiyibuhannanyidadaoyuanlaidezhiliangbiaozhun，qierbuhangaowenhuijiangdidiaogoudewendu。

jianshegongchengjiaoyuwanggenjujinnianlaimingtiguilv
，kexuedituiduanbingquandingfuxifanwei。shulichukaozhapinlvgaodezhongyaozhishidian，weiguangdakaoshengjieshengfuxishijian，tigaobeikaoxiaolv。zhenduiquandingfuxifanweineideyikaodian
，chuanshougeixueyuanjiejuegezhongmingtileixingdejietijiqiao。