Watches of different time zones

电子时钟 显示系统的时间，还可以选择时区来获得不同时区的时间-Electronic clock display system of the time, you can also select the time zone to get the time in different time zones

国内钢化炉控温方式介绍，钢化炉采用多点控温，而且分多个温区，这个文档介绍了钢化炉控温细节！-Domestic steel furnace temperature control mode introduced furnace steel multi-point temperature control, but also in several temperature zones, this document describes the steel furnace temperature contr