标准号:IS 8271 Pt.5/Sec.12-1990
发布日期:1991/1/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围: This standard (Part 5/Sec 12) specifies detail requirements for the characteristics of quartz crystal unit Type CX 12 used for frequency control and selection in oscillators.