中强矿山孔板流量�?参数-价格-中国粉体罐�/title>

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var _cxd = ""; var _xgfa = ""; var _xgzl = ""; var _yhpl = ""; var _gsdt = ""; var _wsj = ""; $(function(){ // 留言询价显示 $(".js_lyxj").click(function(){ showliuyan(this, 0); }); $(".fxp_gb span").click(function(){ $(".fxp").css("display","none"); }); $(".dhxj_gb2").click(function(){ $(".dhxj").css("display","none"); $(".dhxjbox").css("display","block"); $(".dhxjbox2").css("display","none"); }); $(".dhxjbox2_but div").click(function(){ $(".dhxj").css("display","none"); $(".dhxjbox").css("display","block"); $(".dhxjbox2").css("display","none"); }); // 切换 $(".fixdbox_main_left a").click(function(){ $(".fixdbox_main_left a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); $('.js_cpjj').click(function(){$('html,body').animate({scrollTop:$('.cpjj').offset().top-60}, 800);}); $('.js_cxd').click(function(){$('html,body').animate({scrollTop:$('.cxd').offset().top-60}, 800);}); $('.js_xgfa').click(function(){$('html,body').animate({scrollTop:$('.xgfa').offset().top-60}, 800);}); 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}else{ $(".fixdbox").css({"display":"none"}); } $(".fixdbox_main_left div").css({"color":"#4F5862","border-bottom-color":"transparent"}); if($(this).scrollTop()>=_wsj){ $(".fixdbox_main_left div").eq(6).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_gsdt){ $(".fixdbox_main_left div").eq(5).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_yhpl){ $(".fixdbox_main_left div").eq(4).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_xgzl){ $(".fixdbox_main_left div").eq(3).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_xgfa){ $(".fixdbox_main_left div").eq(2).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_cxd){ $(".fixdbox_main_left div").eq(1).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_cpjj){ $(".fixdbox_main_left div").eq(0).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); } }); function showliuyan(me, showtype){ if(showtype==0){ //$("#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>一、孔板流量计的产品介绌�/p><p>孔板和孔板流量计是根据煤矿瓦斯抽放管路的特点，为煤矿瓦斯抽放而设计的计算� 斯抽放量的配套件 。其结构简单，使用和计算方� ，是测量瓦斯流量中为的装置、�/p><p>二、用途及工作原理</p><p>煤矿瓦斯抽放流量是通过径距取压法测量的。当连续流动的流体经管道内的节流装置 时流速会变大，在节流装置上下游侧之间出现静压力差，且流量与压差之间存在着一 个恒定的关系� 因而通过测量压差即可计算出流体的流量、�/p><p>三、产品结构组戏�br/></p><p>孔板流量计主要由:进流体管路、取压嘴、密封圈、连接螺栓与螺母、法兰、孔板、密封垫、出流体管路等构成。孔板是一块具有圆形开孔并相对于开孔轴线对称的圆形薄板，不同管道内径的孔板，其结构形式是几何相似的、�/p><p>四、使用方泔�/p><p>按产品管路上箭头的指示方向安装在瓦斯抽放管路� ，然后安装取压管路，将取压管 和产品取压嘴连接即可、�/p><p><br/></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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