GB/T 12274.4-2021有质量评定的石英晶体振荡器第4部分:分规范能力批准标准
英文:Quartz crystal controlled oscillators of assessed quality—Part 4: Sectional specification—Capability approval GB/T 12...
英文:Quartz crystal controlled oscillators of assessed quality—Part 4: Sectional specification—Capability approval GB/T 12...