master site 基本例句 主站点 The scanning path of a weld seam was constructed by introducing the concept of virtual guide, which can lower operative difficulties for the operator in master site and show high security. 通过引入虚拟向导的操作概念,操作者可以方便地实现远端焊缝扫描操作,并且具有很高的安全性; cnki