change·o·ver
noun/ˈtʃeɪndʒəʊvə(r)/
/ˈtʃeɪndʒəʊvər/
- a change from one system, or method of working to another
（系统或工作方法的）改变，转变，更换 - the changeover from a manual to a computerized system
由手工操作向计算机化系统的转换 - a changeover period
转变时期
- the changeover from a manual to a computerized system