Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 19897.1-2005 |
Automatic Meter Reading System Lower Layer Communication Protocol Part 1:Direct local data exchange 自动抄表系统低层通信协议 第1部分:直接本地数据交换 |
China National Standards 1:Direct |
English PDF |
GB/T 17683.1-1999 |
Solar energy--Reference solar spectral irradiance at the ground at different receiving conditions--Part 1:Direct normal and hemispherical solar irradiance for air mass 1.5 太阳能 在地面不同接收条件下的太阳光谱辐照度标准 第1部分:大气质量1.5的法向直接日射辐照度和半球向日射辐照度 |
China National Standards 1:Direct |
English PDF |
GB/T 17635.1-1998 |
Geotextiles and geotextile-related products--Determination of friction characteristics--Part1:Direct shear test 土工布及其有关产品 摩擦特性的测定 第1部分:直接剪切试验 |
China National Standards 1:Direct |
English PDF |
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