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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>罗茨风机直连式：</p><p> </p><p>优点：风机轴没有侧向力，传动的功率可以很大、�/p><p> </p><p>缺点：与电机直连，可选择的转速少。多数情况下风机排量偏大、需要加装旁通管路放� 功耗浪费比较大</p><p> </p><p>　　1、罗茨风机属容积回转式鼓风机。使用时，随着压力的变化，流量变动甚小，但流量随着转速而变化。因此，压力的选择范围很宽，流量的选择可通过选择转速而达到需要、�/p><p>　　2、由于叶轮在机体内运转无摩擦，不需要润滑，使排出的气体不含油。是化工、食品等工业理想的气力输送汽源。章丘罗茨风朹�/p><p>　　3、罗茨鼓风机的转速较高，转子与转子、转子与机体之间的间隙小，从而泄露少，容积效率较高。我厂加工和装配技术力量强，能保证间隙的合理、均匀，既达到较高的容积效率又不至于使机体内因热膨胀而发生摩擦、�/p><p>　　4、罗茨鼓风机的结构决定其机械摩擦损耗非常小。因为只有轴承和齿轮副有机构接触，在选材上，转子、机壳和齿轮圈有足够的机械强度。运行安全，使用寿命长是本厂罗茨鼓风机产品的一大特色、�/p><p>　　5、本厂罗茨鼓风机的转子均经过静、动平衡校验。成品运转平稳、震动极小、�/p><p>　　� 风机广泛应用轻工、化工、纺织、冶金、电力、矿井、化肥、石油、煤气站、港口、水产养殖、污水处理、重油、喷燃、气力输送等国民经济部门、�/p><p></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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