影响回流焊接质量的设备因素有什么?



回流焊

window.onload=function(){ var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?ef5da6b3672738de733ae9e30212d9f5"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); }