javastr="" 
javastr=javastr+"<table width=\"100%\" border=\"0\">"

javastr=javastr+"<tr><td>"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2012-6/2012612162146.htm\" target=_blank>行星摆线减速机在中国为什么有好几个系</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-7/2010720175347.htm\" target=_blank>止回阀知识</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-7/2010720173641.htm\" target=_blank>电磁阀的原理和结构知识简介</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-7/2010720172743.htm\" target=_blank>怎样使用离心泵</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-7/2010720162432.htm\" target=_blank>三相异步电动机的七种调速方法及特点</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-6/2010625155722.htm\" target=_blank>高频电源是怎样传送到加工面上去的？</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-6/2010625151858.htm\" target=_blank>走丝系统异响怎么办？</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-6/2010625145409.htm\" target=_blank>影响对中精度的因素有哪些？</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-6/20106193241.htm\" target=_blank>怎样维护和保养机床？</a></span><br />"

javastr=javastr+"·<span style=\"font-size:12px;\"><a href=\"/2010-6/20106191125.htm\" target=_blank>锥度机床的最大锥度是怎样确定的？</a></span><br />"
 
javastr=javastr+"</table>"  
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