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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><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">通常使用的两类泵９�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">间歇泵：这种泵连续输送一定体积的溶剂直至溶剂耗尽。通常称此类泵为注射泵。在需要保持高精度流量时通常使用这种泵。间歇泵包括注射泵和启动置换泵、�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">连续泵：目前以这类泵*为常用，连续输送溶剂。往复柱塞泵和液压隔膜泵即属于此类泵、�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">双柱塞并联泵将流动相连续输入色谱柱，该泵工作时两个柱塞的相位相差</span>180度，两柱塞交互工作时产生的脉动可降低总脉动。当一个柱塞工作将流动相输入色谱柱时，另一柱塞工作将流动相吸入并充满泵腔、�/span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">另一种使用流动相脉动见啥的方法是使用双柱塞串联泵。这种泵的主、副泵腔溶剂丹�/span>2:1，当副泵将流动相输入色谱柱时，主泵吸液充满主泵腔。当副泵腔排空时，主泵不仅输液将副泵腔充满，而且也将流动相输入色谱柱�?nbsp;</span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">往复柱塞泵</span>/隔膜泵具有在使用过程中使柱塞不与有害的流动相接触以及柱塞润滑较好的优点。不锈钢薄膜镀金的一侧储存油，另一侧则与流动相接触。当往复柱塞驱使油压迫隔膜时，流动相被输入色谱柱。当柱塞收回时，压力消失，则流动相进入隔膜西侧的泵腔、�/span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">往复式柱塞泵有一个球阀，使用球阀或是逆止阀的目的是保证流动相单向流动。球阀的元件包括：一个蓝宝石的垫圈，一个红宝石的阀球和一根提供张力的弹簧。当柱塞运动从流动相储罐中吸入溶剂时，进口处的红宝石阀球被弹簧上顶，这样可以使溶剂充满溶剂室。出口处的红宝石阀球顶住垫圈，这样防止先前进入色谱柱的溶剂回流。当柱塞向前运动时，流动相推动出口处的红宝石阀球脱离垫圈。同时流动相推动入口处的红宝石阀球顶住垫圈防止流动相回流至储液容器中、�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">通常泵中的柱塞使用材料为人造蓝宝石，必须定期检查是否有划痕，为保持保留时间和峰面积的重现性，必须定期更换柱塞的密封件，某些柱塞泵配有防磨损护圈，可以保护密封件并放置损坏其他零件、�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">大多数输液系统在进样器之前会配备一个在线过滤器或过滤塞子，这个过滤器或是筛网可虑去泵的密封件磨损产生的微粒，这样可防止微粒损毁进样阀或是其他组件。需要定期更换、�/span></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 宋体;color: rgb(153, 153, 153);letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">配备阻尼器的目的是为了见啥由于泵工作引起的压力脉动，阻尼器由一片将流动相和可压缩液体隔开的隔膜组成，在双柱塞补偿泵中隔膜位于主泵腔和副泵腔之间、�/span></span></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"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); var _index = $(this).index(); $(".xgfa_box").css("display","none"); $(".xgfa_box").eq(_index).css("display","block"); }); }); </script>  <div class="xgzl"> <div class="cxd_tit"><span></span>相关资料</div> <div class="xgzl_box"><div style="padding:10px;">暂无数据、�/div> </div> </div>  <div class="yhpl"> <div class="cxd_tit"><span></span>用户评论</div> <form id="FormComments" action="" method="post" onsubmit="return false"> <input name="SaveProComments" id="SaveProComments" type="hidden" value="yes" /> <input name="ProductID" id="ProductID" type="hidden" value="123298" /> <input name="ProQuality" id="ProQuality" type="hidden" value="10" /> <input name="ProService" id="ProService" type="hidden" value="10" /> <input name="ProUsability" id="ProUsability" type="hidden" value="10" /> <input name="ProCostperformance" id="ProCostperformance" type="hidden" value="10" /> <div class="yhpl_pf"> <div> <p>产品质量</p> <div><span id="Quality" class="stars star10"></span><span id="Quality_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>售后服务</p> <div><span id="Service" class="stars star10"></span><span id="Service_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>易用�?/p> <div><span id="Usability" class="stars star10"></span><span id="Usability_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>性价毓�/p> <div><span id="Costperformance" class="stars star10"></span><span id="Costperformance_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> </div> <div class="yhpl_pftit">评论内容</div> <textarea name="Comments" id="ProComments" onfocus="checklogin();" placeholder="分享产品使用经验/采购评价（不超过500字）">