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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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fissionable isotopes
fissionable nucleus
fissionable nuclide
fission angular distribution
fission barrier
fission bomb
fission break
fission break monitor
fission calorimeter
fission capture
fission capture cross-section
fission chain
fission chain reaction
fission chamber
fission charge distribution
fission chemistry
fission contribution
fission converter
fission counter
fission cross section
fission cross-section
fission detector
fission energy
fission factor
fission fragment
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