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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p></p><p>　　BOD测定�?直读式。把水样或经过预处理水样注入培养瓶内，同时在瓶口的吸收杯内放入二氧化碳吸收剂(NaOH)，然后将培养瓶密封，置于生化培养箱内，当被测样品�?0��1℃条件下恒温进行五日培养后，在一定的搅拌速度下，瓶内的水样进行生物氧化反应。有机物转变成氮、碳和硫的氧化物，并产生二氧化碳气体被氢氧化钠吸收，而培养瓶内上部空间的氧气不断地供给水样中微生物的需氧量，培养瓶内产生了压力差，通过检测玻璃管中汞的高度， 即可计算出水样在规定测定期间内的BOD值、�/p><p>　　<strong>产品特点</strong></p><p>　　1. 操作简单，能提供与化学稀释法可比的准确测量结果、�/p><p>　　2. 读数直观、�/p><p>　　3. 使用和维护方便、�/p><p>　　4. 应用范围广、�/p><p>　　<strong>技术参�?/strong></p><p>　　测量范围�?�?000 mg/L测定方法：压差法</p><p>　　准确度：符合国标“GB7488”显示：直读</p><p>　　批处理量�?份水样培养温度：20�?#177;1ℂ�/p><p>　　外形尺寸� 400��270��350(mm)主机重量�? kg</p><p>　　主机功耗：<15W</p><p></p><p></p><p></p><p></p><p></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); 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