en 303-5 meaning in Chinese

要求、试验和标记

Heating boilers - part 5 : heating boilers for solid fuels , hand and automatically stocked , nominal heat output of up to 300 kw - terminology , requirements , testing and marking ; german version en 303 - 5 : 1999
采暖锅炉.第5部分:用固体燃料,手动和自动填料燃烧,公
En 303 - 5 heating boilers . part 5 : heating boilers for solid fuels , hand and automatically stocked , nominal heat output of up to 300 kw . terminology , requirements , testing and marking
供暖锅炉.第5部分:公称热输出值在300kw以下的手动和自动进料的固体燃料的供暖锅炉.术语要求试验和标记