Search on: VACUUM 
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Descriptor English:   Vacuum 
Descriptor Spanish:   Vacio 
Descriptor Portuguese:   Vácuo 
Tree Number:   G03.230.300.100.185.902
H01.671.691.902
Definition English:   A space in which the pressure is far below atmospheric pressure so that the remaining gases do not affect processes being carried on in the space. 
Indexing Annotation English:   almost never IM; no qualif
History Note English:   91(78); was see under ATMOSPHERIC PRESSURE 1978-90 
Record Number:   15021 
Unique Identifier:   D014618 

Occurrence in VHL:
 

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