[国外标准] BS 7874-1998 Microbiological deterioration of elastomeric seals for joints in pipework and pipelines
[航空标准] HB 7874-2008 28Mpa无扩口塞子
[国家标准] GB 7874-1987 森林土壤全钾、全钠的测定
[机械行业标准] JB/T 7874-2015 种植机械术语
[机械行业标准] JB/T 7874-1999 种植机械 术语