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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\">基坑工程的基本概念及分类</h4><div class=\"download_card_msg\">7　基坑工程 
7.1　概述 
7.1.1　基坑工程的基本概念及分类 
&ensp;&ensp;&ensp;&ensp;基坑围护工程作为岩土工程学科的一个分支成了近年来岩土学界经久不衰的热点和难点课题。所谓基坑工程是指在建造埋置深度较大的基。下面小编给大家分享基坑工程的基本概念及分类，希望能帮助到大家。 基坑工程的基本概念及分类文档下载网址链接：</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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