Prezentul standard stabile?te etaloanele, metodele de transmitere ?i schema de tians-mitere a tmit??ii de m?sur? a densit??ii fluxului de neutroni teimici.
Unitatea de m?sur?, ?n sistemul interna?ional pentiu densitatea fluxului de neutron reprezint? num?
STAS 11071/21-1990 history
1990STAS 11071/21-1990 Hierarchy of measuring instruments. Block diagram of hierarchy of measuring instrument for thermal neutrons flux density