[新疆地方标准] DB65/T 3973-2017 德国肉用美利奴种羊
[国外标准] AS NZS 3973-2009 Showertoilet chairs (mobile and static)
[航空标准] HB 3973-1987 双头螺母
[国家标准] GB/T 3973-1992 纵横接线器
[机械行业标准] JB/T 3973-1999 电动曲线锯