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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><div class=\"download_card\"><div class=\"card_nr card_nr_lb\"><h4 class=\"card_bt\">无尘净化车间的用途有哪些（无尘净化车间的概念及组成部分）</h4><div class=\"download_card_msg\">一、无尘净化车间的标准1.无尘车间不同级别空气洁净度的空气过滤器的选用、布置要点:对于300000级空气净化处理，可采用亚高效过滤器代替高效过滤器;空气洁净度100级、10000级及100000级的空。下面小编给大家分享无尘净化车间的用途有哪些（无尘净化车间的概念及组成部分），希望能帮助到大家。 无尘净化车间的用途有哪些（无尘净化车间的概念及组成部分）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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