The material is transferred by means of aerial railway or gorund guiding trolley from freezing to freezing drying and till unloading assuring the sanitation and safety.
采用空中轨道传输方式或地面推导车，从冷冻至冷冻干燥直至卸料，即卫生又安全。
2
The freezing time, drying time were calculated, and contrasted by experimental value.
计算了冻结时间，干燥时间，并与实验值进行了比较。
3
Then the eluent which got from above conditions was dehydrogenized by vacuum freezingdrying method, the tan powder of BLF was collected.