标准号:IS 8899-1978
发布日期:1979/3/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard deals with the use of synthetic quartz crystals, so that synthetic quartz crystals may be used to their best advantage.1.2 This standard does not explain the practical techniques of manufacturing a crystal unit from a quartz crystal, nor does it cover all the properties of synthetic quartz crystals.