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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135121_535798_procont.jpg" style="" title="135121_535798_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135124_075931_procont.jpg" style="" title="135124_075931_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135131_589202_procont.jpg" style="" title="135131_589202_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135134_975180_procont.jpg" style="" title="135134_975180_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135138_404818_procont.jpg" style="" title="135138_404818_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135141_567936_procont.jpg" style="" title="135141_567936_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135144_950445_procont.jpg" style="" title="135144_950445_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135148_077332_procont.jpg" style="" title="135148_077332_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135151_406919_procont.jpg" style="" title="135151_406919_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135157_999941_procont.jpg" style="" title="135157_999941_procont.jpg"/></p><p><img src="//www.znpla.com/img1/img/daily/2024/01/16/135201_958078_procont.jpg" style="" title="135201_958078_procont.jpg"/></p><p>粉尘层的厚度和密度对其透气性具有重要影响。随着粉尘层厚度和密度的增加，其透气性降低、�/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;"> 导电粉尘：电阻率等于或小�?03Ω.m的可燃性粉尗�br /> 非导电粉尘：电阻率大�?03Ω.m的可燃性粉尗�br /> 电阻率：单位面积与粉尘接触的电极，以单位距离分隔，两电极之间测得的电阻小值� </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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