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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>放射性碳＇�sup>14</sup>C）测年方法是利比（W.F.Libby）于1946年开始创建的，迄今为止广泛应用于国内外的地质、土壤、环境、岩溶、海洋、古气候变化、地下水、古人类、古遗址考古、环境保护、医学诊断及医学的研究。我国五十年代末在夏鼎和刘东生先生的倡导下，建立了我�?*�?sup>14</sup>C实验室�?975年我囼�sup>14</sup>C实验室成功的建立了合成苯的方法，开始了液体闪烁测年、�/span></p><p><span>目前国内多家<sup>14</sup>C实验室建设好后，玻璃制样系统在制备样品的实验过程中容易破碎、损坏、各单位没有配备专职玻璃工，所以制样系统运转不起来，因丹�sup>14</sup>C样品前处理装置中的制样系统安装全部是由玻璃焊接，玻璃系统坏了，必须由专门的玻璃师傅焊接后才能使用，这样的问题在全国是一个普遍存在的问题，我国早年培养的一批玻璃师傅几乎全部退休，许多城市目前几乎找不到玻璃师傅，随着玻璃焊接技术的消失，直接影响到放射性碳<sup>14</sup>C测年技术的发展，制样系统成为常规放射性碳<sup>14</sup>C测年技术发展的瓶颈。本制样系统采用金属系统成功解决该瓶颈、�/span></p><p><span>主要特点９�/span></p><p><span>l<span>金属系统，无需玻璃焊接，不易损坎�/span></p><p><span>l<span>安装方便，拆卸灵洺�/span></p><p><span>l<span>无油、不易污柒�/span></p><p><span>性能指标９�/span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>材质</span></p></td><td><p><span>主体采用316不锈钢；冷阱为KF25玻璃、�/span></p></td></tr><tr><td><p><span>真空�?/span></p></td><td><p><span>复合真空� 双电阻、壹电离</span></p><p><span>测量范围：独立电阻单�?��105 � 1��10-1Pa：�/span></p><p><span>复合单元连续测量（自动模式）1��105~1��10-5Pa、�/span></p></td></tr><tr><td><p><span>外形尺寸</span></p></td><td><p><span>2 m</span><span>（长�?#215;0.8 m（宽�?#215; 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