数据库错误: [Field 'lasttime' doesn't have a default value]
insert into iplist (ip,system,browser,url,startime) value("10.1.211.220","Unknown","unknown","http://www.bzgroup.com.cn/?a=view&p=445&r=691","2025-12-20 10:53:56")

数控机床维修与保养:操作者在每班加工完毕后,应彻底扫除散落于拖板、导轨等处的切屑;在办公时注意查缉排屑器丝杠与导轨的生存的年限;在作业完毕前,应否正常以免导致切屑堆积将各伺服轴归回原点后停机。