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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 style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> <img alt="参数" class="imageResponse js-onerror" id="87" src="//www.znpla.com/img1/img/daily/2019/08/29/114140_274953_procont.jpg"/></p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> </p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> <img alt="参数" class="imageResponse js-onerror" id="88" src="//www.znpla.com/img1/img/daily/2019/08/29/114140_460717_procont.jpg"/></p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> </p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> <span style="color:#0087c9;"><strong><span style="font-size:18.7px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">三叶罗茨风机原理国�/span></span></strong></span></p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> </p><p style="margin-top: 0em; margin-bottom: 0em; text-indent: 0em; letter-spacing: 0em; line-height: 3em; text-align: center;"> </p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">三叶罗茨鼓风机与二叶罗茨鼓风机字面上比较,多了一个叶，将二叶型变为三叶型,从而将有效容积从两等分变为三等�?减少了输出气流压力的脉动,而且排气腔部分体积通过叶轮间隙回流到进气腔的气体流量减�?气体的扰动减�?气体的脉动压力减�?从而使罗茨鼓风机的振动减少.两者之间还有以下的区别:</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(1)在中心距和外圆半径相同的情况�?圆弧叶型的三叶罗茨鼓风机比两叶的排量要大.渐开线叶型罗茨鼓风机的排量和转子的头数没有关�?</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(2)三叶转子的力学性能较好,相比于两叶的可更好地保证叶轮之间及其叶轮和机壳的间隙.</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(3)由于叶型特点,三叶脉动比两叶好,因此*明显的优势就�?大大降低了震动和噪音,有效降低噪音20分贝以上.</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(4)在三叶转子上使用的轴承的寿命比在二叶上使用的�?5%左右.</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(5)三叶罗茨风机所达到的压力远高于两叶风机.</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(6)在同等效率下,三叶罗茨风机更节�?</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">(7)在间隙大小及工作条件相同的情况下,三叶鼓风机的内泄漏流量往往比二叶的小一�?</span></span></p><p style="margin-top:0em;margin-bottom:0em;TEXT-INDENT:0em;LETTER-SPACING:0em;LINE-HEIGHT:03em;"> <span style="font-size:16px;"><span style="font-family:微软雅黑�?tahoma,arial,sans-serif;">现在市场上的罗茨风机,很少再见到两叶罗茨风机了,现存两叶罗茨风机全是大风量的,基本上都被三叶罗茨鼓风机代替</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="154004" /> <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）">