updating maintenance meaning in English

更新维护

Production information board updating maintenance
生产部看板的更新维护。
Record / analyze / update maintenance records of production machines
纪录，分析，更新生产设备维修记录。
Both temporal and spatial views are taken account into creating sparse position number , lifespan and other node properties for every document node in the tree document structures of z - office . and a new algorithm based document update maintenance is proposed and implemented in the system . with the support of these works , z - office can retrieve all versions efficiently and quickly
具体来说就是利用空间性和时间性的概念,针对z - office文档,为其树形文档结构上的每个节点位置进行稀疏编码并赋予节点生存区间以及其它一些附属信息,然后在文档增量存储上使用了本文提出的文档更新维护算法,使得改进后的方案不需要往前或往后推算即可直接获取任意版本的z - office文档。