DIN EN 1834-1:2000
往复式内燃机.潜在爆炸性环境用发动机设计和结构安全性要求.第1部分:可燃气体和蒸汽环境用II组发动机
Reciprocating internal combustion engines - Safety requirements for design and construction of engines for use in potentially explosive atmospheres - Part 1: Group II engines for use in flammable gas and vapour atmospheres; German version EN 1834-1:2000