一旦冷冻，把材料放在冷冻干燥器里四天，除去水分。
Once frozen, the material was placed in a freeze-dryer that removed all the water from it over the course of four days.
同理也适用于电动的附属装置如冷冻干燥器与风机等。
Similarly also apply to a subsidiary of the electric devices, such as frozen dryer and fan, etc.
同理也适用于电动的附属装置如冷冻干燥器与风机等。
Similarly also apply to a subsidiary of the electric devices, such as frozen dryer and fan, etc.
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