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NF Z66-500-1987 Information systems Data communication High-level data link control procedures Description of the X 25 lapb-compatible dte data link procedures 《信息系统 数据通信 高级数据链路控制规.pdf
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9
NF Z66-448-1993 Information systems interconnection - X 25 Protocol relaying - part6 Profile RC51 1121(M-IT-02R 32 over digital data circuit CSDN leased line)《信息系统互连 X 25协议中继 第6部分 .pdf
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14
NF Z66-444-1993 Information systems interconnection - Provision of the OSI connection - mode transport service using the OSI connection-mode network service in an end system attache d.pdf
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21
NF X43-505-1998 Air quality Assessment of uncertainty of a measurement method under field conditions using a second method as a reference 《空气质量 用二次法作参照在野外条件下进行测量其方法的不确定性的评定》.pdf
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6
NF X43-404-1993 Air quality - Air of domestic living accomodations and of public premises - Airbone sampling and analysis of the allergens of the internal environment《空气质量 家庭生活住所和公.pdf
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24
NF X43-338-1998 Stationary source emissions Determination of the mass concentration of sulfur dioxide Ion chromatography method 《固定源辐射 二氧化硫质量浓缩的测定 离子色谱法》.pdf
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6
NF X43-302-1986 Air quality Stationary source emission Determination of dust concentration by opacimetry with reflected light 《空气质量 固定源辐射 用反射光不透明计测定灰尘浓度》.pdf
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11
NF X43-301-1991 Air quality Stationnary sources emissions Determination of an index for the gaseous organic content Flame ionization method 《空气质量 固定源辐射 气体有机化合物含量指数的测定 火焰电离子化法》.pdf
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14
NF X10-132-1975 Measurement of water flow in closed conduits Tracer methods part II constant rate injection method using non-radioactive tracers 《密封管道中水流量的测定 示踪法 第2部分:使用非放射性示踪物的恒速.pdf
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16
NF X10-131-1974 Measurement of water flow in closed conduits tracer methods part i general 《密封管道中水流量的测定 示踪法 第1部分:综合》.pdf
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