JOYN品牌HY-3多功能振荡器，1.仪器外壳应妥善接地，以免发生意外。3.仪器应保持清洁干燥，严禁液体进入机内。<astyle="color:rgb(68,68,68);font-family:microsoftyahei;font-style:normal;margin-bottom:0px;margin-left:0px;margin-right:0px;margin-top:0px;padding-bottom:0px;padding-left:0px;padding-right:0px;padding-top:0px;text-decoration:none;transition-delay:0s;transition-duration:0.3s;transition-property:all;transition-timing-function:cubic-bezier(0.25,0.1,0.25,1);"target=""item=""=""%e5%a4%9a%e5%8a%9f%e8%83%bd%e6%8c%af%e8%8d%a1%e5%99%a8=""5686011"="">4.仪器发生故障，请先检验电源。)