便携式叶绿素测定�?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>HED-YA植物叶绿素仪 <strong><strong>便携式叶绿素测定仪价栻�/strong></strong></p><p>Y一、仪器用� </p><p>HED-YA植物叶绿素仪可以即时测量植物的叶绿素相对含量（单位SPAD）或“绿色程度”从而可以了解植物真实的硝基需求量并且帮助您了解土壤硝基的缺乏程度或是否过多地施加了氮肥。您可以通过这种仪器来增加氮肥的利用率，并可保护环境（防止施加过多的氮肥而使环境特别是水源受到污染）� </p><p>二�?strong><strong>便携式叶绿素测定仪价栻�/strong></strong> 工作原理 � </p><p>1.叶绿素测定仪的工作原� </p><p>两个LED光源发射两种光，一种是红光(650nm)，一种是红外�?940nm)，两种光穿透叶片，打到接收器上，光信号转换成模拟信号，模拟信号被放大器放大，由模拟/数字转换器转换成数字信号，数字信号被微处理器处理，计算出SPAD值并显示在液晶屏上� </p><p>2.叶绿素测定仪测量值的校准与计� </p><p>�?）叶绿素仪测量值的校准与计算两个LED次序发光，被接收的光转换成电信号，光强度的比率被用来计算� </p><p>�?）在压头夹住样品后，两个LED再次发光，通过叶片传输的光打到接收器上，被转换成电信号，传输光的强度比率被计算� </p><p>�?）步�?�?的值用于计算SPAD测量值，即表示夹住的样品叶片当前叶绿素相对含量� </p><p></p><p>三、技术指� </p><p>1．测量范�?.0-99.9SPAD </p><p>2．测量面�?mm*2mm </p><p>3．测量精�?#177;1.0SPAD单位以内 </p><p>(室温下，SPAD值介�?-50) </p><p>4．重复�?#177;0.3SPAD单位以内 </p><p>(SPAD值介�?-50) </p><p>5．测量时间间隔小�?� </p><p>6．数据存储容�?GB </p><p>7．电�?.2V可充电锂电池 </p><p>8．电池容�?00mah </p><p>9．重�?50g </p><p>10．外形尺�?40��85��45mm(�?#215;�?#215;�? </p><p>11．工作及存储环境0�?50℃；85%相对湿度</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"}); $(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="212270" /> <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）">