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GB/T 11299.10-1989
卫星通信地球站无线电设备测量方法 第二部分:分系统测量 第十节:高功率放大器
Methods of measurement for radio equipment used in satellite earth stations--Part 2:Measurements for sub-systems--Section ten:High-power amplifier
GB/T 11299.3-1989
卫星通信地球站无线电设备测量方法 第一部分:分系统和分系统组合通用的测量 第三节:中频范围内的测量
Methods of measurement for radio equipment used in satellite earth stations--Part 1:Measurements common to sub-systems and combinations of sub-systems--Section three:Measurements in the i.f.range
GB/T 3600-2000
Fertilizers--Determination of ammoniacal nitrogen content--Formaldehyde method
GB/T 18591-2001
Welding--Guidance on the measurement of preheating temperature,interpass temperature and preheat maintenance temperature