Issue 25

A. Shanyavskiy, Frattura ed Integrità Strutturale, 25 (2013) 36-43; DOI: 10.3221/IGF-ESIS.25.06

It should be corrected knowledge about meaning of the word that used to such indication environment state as “vacuum”. Usually considered: (1) low vacuum with gas pressure less than 100 Pa; (2) middle pressure with 0.1

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