中科微纳全自动粉末真密度�?参数-价格-中国粉体罐�/title>

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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><img src="//www.znpla.com/img1/img/daily/2023/06/20/144316_231983_procont.jpg" style="" title="144316_231983_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144319_773601_procont.jpg" style="" title="144319_773601_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144330_614310_procont.jpg" style="" title="144330_614310_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144350_357981_procont.jpg" style="" title="144350_357981_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144353_470351_procont.jpg" style="" title="144353_470351_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144359_497151_procont.jpg" style="" title="144359_497151_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144408_632994_procont.jpg" style="" title="144408_632994_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144415_135976_procont.jpg" style="" title="144415_135976_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144419_043950_procont.jpg" style="" title="144419_043950_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144423_132091_procont.jpg" style="" title="144423_132091_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144427_513945_procont.jpg" style="" title="144427_513945_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144441_751028_procont.jpg" style="" title="144441_751028_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2023/06/20/144446_654616_procont.jpg" style="" title="144446_654616_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/04/29/135534_332145_procont.jpg" title="135534_332145_procont.jpg" alt="粉体�?jpg"/></p><p>密度的相关概念，如体积密度、表观密度、真密度等均与上述三个体积密切相关。以多孔材料为例，其体积包括开口孔隙、闭口孔隙和固体三部分，如下图所示。深入材料内部，构成封闭状，不与外界相通的孔为闭孔，所有的闭孔体积之和为闭口孔隙。一端在材料表面开口，另一端深入材料内部，称为盲孔；一端在材料表面开口，穿过材料到另一端表面也存在开孔，称为贯通孔；一端在材料表面开孔，深入材料内部后，又产生若干相通的分支，这些分支均通过主孔与材料表面相通，称为交联孔。盲孔、贯通孔和交联孔都具有一个共性，即有一端与外界相通，所以这类孔统称为开孔，由这些孔构成的开孔体积之和即为开口孔隙、�/p><p>北京中科微纳精密仪器有限公司专注于粉末、炭素、石墨烯、锂电池原料等粉体材料检测仪器的研发、生产与销售，经过多年的产学研结合与用户的应用总结，累积开发了一系列专注于粉体材料检测的仪器，能够为炭素、石墨、锂电行业检测试验室提供全套解决方案、�/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;"> 密度是物质的物理特性之一，不同物质的密度一般不同，反映了不同物质的不同性质，因此，可以根据密度来鉴别物质。密度不随物质形状和空间地理位置的变化而变化，但因物质的状态、温度、压强的改变而改变。例如，水的三种状态冰、水、水蒸汽密度不同；蒸汽锅炉中，同样是水蒸汽，因压强不同，蒸汽密度也不同、�br /> 密度在使用过程中，由于应用领域不同，物质形态差异，对其体积的定义有较大的区别，例如，对于块状金属，其体积为排开水的容积；对于玉米、小米等粮食，更关心其堆体积；而对于多孔材料，需要了解其骨架体积 </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 class="xgfa_cont"><a href="//www.znpla.com/huayan2021/solution_333.html" target="_blank" class="xgfa_cont_img"><img src="//www.znpla.com/img1/img/daily/2021/11/22/140453_790664_solution_25872.jpg"/></a> <div class="xgfa_cont_rig"><a href="//www.znpla.com/huayan2021/solution_333.html" target="_blank">体积电阻率和表面电阻率有什么不吋�/a> <p class="xgfa_cont_txt">首先*步需要测试体积电阻值和表面电阻值，然后根据试样的尺寸和电极系数，根据计算公式得到体积电阻率和表面电阻率，体积和表面电阻测试时，对电压试样的位置不同，从而能够不同的电阻值在接和未接试样时电容的变化</p><div class="xgfa_cont_time"> <span>石油/化工</span><p>2021-11-22</p></div></div></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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