The paper presents the advantages and disadvantages of vacuum drying in transformer tank analyses machine set 's disadvantages during its used and puts forward the solving measures .

介绍了对变压器油箱内实施 抽 真空 干燥时的优缺点，分析了 真空 机组改进前在使用过程中存在的问题，对此提出了解决措施。

Fuzzy Control System of Food Vacuum Freeze Drying Machine

食品 真空冷冻 干燥机的模糊控制系统

A Improved Pressure-Changing Vacuum Drying Machine

一种改进的变压法 真空 干燥 设备

Heating system of new generation food vacuum freeze drying machine

食品 真空冷冻 干燥机加热系统

The paper introduces the current PID distribute control system of food vacuum freeze drying machine and some its problems and puts forward a new style fuzzy control method . The system has the properties of high controlling efficiency good reliability and so on .

介绍了现有食品 真空冷冻 干燥机的PID集散控制系统及存在的问题，并 设计、仿真了一种新型的模糊控制方法，使系统具有控制精度高、可靠性好等特点。

24m ~ 2 Vacuum Freeze Drying Machine

24m~2 真空冷冻 干燥机