GB/T 13739-2011
Test methods for laser beam widths,divergence angle and transverse mode 激光光束宽度、发散角的测试方法以及横模的鉴别方法 |
GB 5135.21-2011
Automatic sprinkler system - Part 21: Inspector’s test connection 自动喷水灭火系统 第21部分:末端试水装置 |
GB/T 9384-2011
Environmental testing requirements and methods for broadcasting receivers,broadcasting television receivers,tape recorders and audio amplifiers 广播收音机、广播电视接收机、磁带录音机、声频功率放大器(扩音机)的环境试验要求和试验方法 |
GB/T 7584.3-2011
Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture 声学 护听器 第3部分:使用专用声学测试装置 测量耳罩式护听器的插入损失 |
GB/Z 25320.6-2011
Power systems management and associated information exchange - Data and communications security - Part 6: Security for IEC 61850 电力系统管理及其信息交换 数据和通信安全 第6部分:IEC 61850的安全 |
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