| http://www.w3.org/ns/prov#value | - It is of advantage, in particular for sterilizers, if, according to another proposal of the invention, the material is subjected to an absolute pressure of a level below atmospheric pressure, i.e., some 100 mbar preferably, before microwave energy is coupled in, a vacuum unit being provided for evacuation of the interior, which should be locked by a valve and should be placed outside of the resona
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