The utility model relates to a traytype chicken breeding program ruler, comprising the tray of a program ruler and the tray of a day-month ruler.
本实用新型涉及一种盘式雏鸡养殖程序尺，它由一个程序尺盘和一个日、月尺盘组成。
2
The utility model discloses a built-in electrothermal traytype specific gravity vacuum degassing tank, belonging to the technology field of vacuum oil purifier.
本实用新型公开的一种内置电热盘式比重真空脱气罐属于真空净油机技术领域。
3
Traytype cable tray is one of the widely used cables in the area of petroleum, chemical industry, electric power, light industry, television and tele-communication.