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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| SY/T 7657.1-2021 |
Natural gas Determination of composition by phOtoacoustic spectroscopy-infrared spectroscopy-fuel cell combined method Part 1: General {译} 天然气 利用光声光谱-红外光谱-燃料电池联合法测定组成 第1部分：总则 |
China Oil & Gas Industry
Standards Otoacoustic |
 English PDF |
| SY/T 7657.2-2021 |
Natural gas Determination of composition by phOtoacoustic spectroscopy-infrared spectroscopy-fuel cell combined method Part 2: Determination of methane content by photoacoustic spectroscopy {译} 天然气 利用光声光谱-红外光谱-燃料电池联合法测定组成 第2部分：光声光谱法测定甲烷含量 |
China Oil & Gas Industry
Standards Otoacoustic |
English PDF |
| SY/T 7657.3-2021 |
Natural gas Determination of composition by phOtoacoustic spectroscopy-infrared spectroscopy-fuel cell combined method Part 3: Determination of ethane and above alkanes, carbon dioxide and carbon monoxide content by infrared spectroscopy {译} 天然气 利用光声光谱-红外光谱-燃料电池联合法测定组成 第3部分：红外光谱法测定乙烷及以上烷烃、二氧化碳、一氧化碳含量 |
China Oil & Gas Industry
Standards Otoacoustic |
English PDF |
| SY/T 7657.4-2021 |
Natural gas Determination of composition by phOtoacoustic spectroscopy-infrared spectroscopy-fuel cell combined method Part 4: Determination of hydrogen content by fuel cell method {译} 天然气 利用光声光谱-红外光谱-燃料电池联合法测定组成 第4部分：燃料电池法测定氢含量 |
China Oil & Gas Industry
Standards Otoacoustic |
English PDF |
| JJF 1289-2011 |
Calibration Specification for Measurement Instruments of Otoacoustic Emissions 耳声发射测量仪校准规范 |
China Metrological
Standards Otoacoustic |
English PDF |
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