BS ISO 3529-2:2020 pdf free.Vacuum technology一- Vocabulary Vacuum pumps and related terms. BS ISO 3529-2 This document gives definitions of vacuum pumps and related terms. It is a continuation of ISO 3529-I which defines general terms used in vacuum technology.2 Normative references ISO 3529-1:2019, Vacum technology一Vocabulary 一Part 1: General terms ISO 21360-1:2012, Vacum technology一Standard methods for measuring vacuwm-pump performance一Part 1:...