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冷冻升华干燥
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冷冻升华干燥
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农学
冷冻升华干燥
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freeze drying
冷冻升华干燥
先将物料冷冻至水的冰点以下,并置于高真空(操作压力10~40帕)的容器中,通过供热使物料中的水分直接从固态冰升华为水汽,再经真空泵排出干燥室而使物料干燥的方法。又称真空冷冻干燥。
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teacher certification examination
Teacher College in the National Southwest Union University
teacher culture
teacher education
teacher education management institution
teacher education model
teacher education of intellectualism
teacher education of special education
teacher education professional organizations
teacher education system
teacher education tendence based on scientism
teacher education thought of Vasily Aleksandrovich Sukhomlynsky
teacher efficacy
teacher emotion
teacher employment system
teacher evaluation
teacher expectation
teacher for general knowledge course
teacher for specialized courses
teacher identity
teacher in different grades
teacher in different subjects
teacher in role
teacher knowledge
Teacher Law of the People's Republic of China
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