document.write('<div class=\"sidebar\"><a id=\"copytext\" data-clipboard-action=\"copy\" data-clipboard-target=\"#docopy\" class=\"fuzhi\"><span>一键复制</span></a><a class=\"sidedown dl-link\"   href=\"javascript:;\" id=\"vipdown\"  onclick=\"showpay(2)\"><span>下载文档</span></a><a href=\"javascript:;\" class=\"gf_tousu\" onclick=\"showkf()\"><span>联系客服</span></a></div><div class="d_alert marks" price="2.9"  redodown="1"  myuserid="0" token="377dc14123" iscopy="0"classid="535"  copyid="docopy" userid="51" payurl="/" sign="dc1e5e082f" ddno1="vMhP" ispc="pc" id="55428"  showid="" vip="newstext"  num="0" dotype="2"><div class="copy-alert alert-bounceIn"><div class="claos closepay"></div><div class="paybox"><div class="payitem item-active" isone="1" ggroupid="2" gfen="9" gmoney="9" gdate="30"  gmoney="9" ><span class="hot"></span><div class="paybox-title">月会员</div><div class="paybox-img" style="margin-top:15px;"><img src="/skin/fword/images/paper_more.png"></div><div class="paybox-art">每天0次下载</div><div class="paybox-money"><strong>9元/30天</strong></div></div></div><div class="paybox"><div class="payitem"  isone="0"  gmoney="2.9" ><div class="paybox-title">直接下载</div><div class="paybox-img" style="margin-top:15px;"><img src="/skin/fword/images/paper_one.png"></div><div class="paybox-art">单次下载</div><div class="paybox-money"><strong>2.9元/次</strong></div></div></div><div class="paybottom"><div class="paybox-bottom2" onclick="showcode(1)">微信支付</div><div class="paybox-bottom2 alipay paylogin2" onclick="showcode(0)">支付宝支付</div></div><div class="xiazai"><div class="xiazai-box"><a href="javascript:;" onclick="showkf()"  class="redown">联系客服</a><a href="javascript:;"  class="redown" onclick="ajaxlogin();">立即登录</a><a href="javascript:;"   class="redown" onclick="showkf()">忘记账号</a></div></div></div></div><div class="pay_mask marks"><div class="mask_box"><div class="pay_mask_top">欢迎使用微信支付</div><div class="pay_qrcode"><img class="paycode" src=""></div><div class="pay_tip"><img src="/skin/fword/images/sys.png"alt="">扫一扫支付</div><div class="pay_price">金额：<span class="paymoney"></span></div><div class="claos closecode" ></div></div></div><div class="customer_mask mask"><div class="customer_service_box"><div class="cj_title"><span>常见问题</span></div><ul><li><div class="que">1、支付成功后，为何无法复制/下载</div><div class="ans">付费后复制不了，请核对下微信账单信息，确保付费成功；已付费成功了还是复制不了<br/>VIP会员登陆即可:<a href="javascript:;" onclick="AjaxLog()">点击这里</a><br/></div></li><li><div class="que">2、忘记账号和密码的解决办法</div><div class="ans">忘记账号请：<a href="javascript:;" onclick="showfaq()">点击这里</a><br/>忘记密码请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=1306325736&amp;site=qq&amp;menu=yes" target="_blank">点击这里</a></div></li><li><div class="que">3、如何联系客服</div><div class="ans">快速举报反馈通道：<a href="https://wendangwuyou.com/e/tool/feedback/?bid=1" target="_blank">立即【投诉-举报-反馈】</a><br/>如果以上无法解决您的问题请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=1306325736&amp;site=qq&amp;menu=yes" target="_blank">站长QQ</a><br/>微信客服：yiqidaoshu</div></li></ul><div class="member"><script src="/e/member/AjaxLog/loginjs2.php"></script></div><div class="claos closekf" ></div></div></div><div class="down_mask mask" ><div class="down_service_box"><div class="close" data-alert="customer_mask"></div><div class="cj_title"><span>下载中心</span></div><div class="down_body"><p>您的账号注册成功！密码为：123456，当前为默认信息，请及时修改</p><p><a href="" class="down">下载文件</a><a href="">立即修改</a></p></div><div class="claos closedown"></div></div></div><div class="faq_mask mask"><div class="faq_service_box" ><div class="close"data-alert="customer_mask"></div><div class="cj_title"><span>帮助中心</span></div><div class="faq_get"><p><input class="orderid" type="text" size="30" placeholder="请在这里订单号"></p><p><a class="getuser" href="javascript:;" onclick="getusername()">找回用户名</a></p></div><div class="faq-show"></div><div class="faq-tishi"><p><b>如何获取自己的订单号？</b></p><p>打开微信，找到微信支付，找到自己的订单，就能看到自己的交易订单号了。</p><p><img src="/skin/fword/images/faq.jpg"></p></div><div class="claos closefaq" ></div></div></div>');
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&ensp;&ensp;&ensp;&ensp;光纤中光功率很大时，会产生非线性效应。石英光纤中的非线性效应分为受激散射和非线性折射率引起的效应两类。受激散射包括受激布里渊散射和受激拉曼散。下面小编给大家分享非线性效应，希望能帮助到大家。 非线性效应文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
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