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NBN T 04-219-1983 0000 Phthalic anhydride for industrial use - Determination of impuries oxidizable in the cold by potassium permanganate - Iodometric method《工业用酞醛 用高锰酸钾冷却的可氧化杂质的测定.pdf 1

NBN T 04-219-1983 0000 Phthalic anhydride for industrial use - Determination of impuries oxidizable in the cold by potassium permanganate - Iodometric method《工业用酞醛 用高锰酸钾冷却的可氧化杂质的测定.pdfNBN T 04-219-1983 0000 Phthalic anhydride for industrial use - Determination of impuries oxidizable in the cold by potassium permanganate - Iodometric method《工业用酞醛 用高锰酸钾冷却的可氧化杂质的测定.pdf

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NBN T 03-197-1980 9375 Potassium hydroxide for industrial use - Determination of chlorides content - Photometric method《工业用氢氧化钾，氯化物含量的测定 光度测定法》.pdf 6

NBN T 03-197-1980 9375 Potassium hydroxide for industrial use - Determination of chlorides content - Photometric method《工业用氢氧化钾，氯化物含量的测定 光度测定法》.pdfNBN T 03-197-1980 9375 Potassium hydroxide for industrial use - Determination of chlorides content - Photometric method《工业用氢氧化钾，氯化物含量的测定 光度测定法》.pdf

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NBN T 03-196-1980 6250 Potassium hydroxide for industrial use - Determination of carbon dioxide content - Titrimetric method《工业用氢氧化钾，二氧化碳含量的测定 滴定法》.pdf 6

NBN T 03-196-1980 6250 Potassium hydroxide for industrial use - Determination of carbon dioxide content - Titrimetric method《工业用氢氧化钾，二氧化碳含量的测定 滴定法》.pdfNBN T 03-196-1980 6250 Potassium hydroxide for industrial use - Determination of carbon dioxide content - Titrimetric method《工业用氢氧化钾，二氧化碳含量的测定 滴定法》.pdf

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NBN T 03-195-1980 6250 Potassium hydroxide for industrial use - Sampling - Test sample - Prepa-ration of the main solution for carrying out certain determinations《工业用氢氧化钾，取样 试样 为实现.pdf 5

NBN T 03-195-1980 6250 Potassium hydroxide for industrial use - Sampling - Test sample - Prepa-ration of the main solution for carrying out certain determinations《工业用氢氧化钾，取样 试样 为实现.pdfNBN T 03-195-1980 6250 Potassium hydroxide for industrial use - Sampling - Test sample - Prepa-ration of the main solution for carrying out certain determinations《工业用氢氧化钾，取样 试样 为实现.pdf

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NBN T 03-194-1980 1875 Potassium hydroxide for industrial use - Determination of sodium con-tent - Flame emission spectrophotometric method《工业用氢氧化钾，钠含量的测定 火焰发射分光光度分析法》.pdf 6

NBN T 03-194-1980 1875 Potassium hydroxide for industrial use - Determination of sodium con-tent - Flame emission spectrophotometric method《工业用氢氧化钾，钠含量的测定 火焰发射分光光度分析法》.pdfNBN T 03-194-1980 1875 Potassium hydroxide for industrial use - Determination of sodium con-tent - Flame emission spectrophotometric method《工业用氢氧化钾，钠含量的测定 火焰发射分光光度分析法》.pdf

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NBN T 03-193-1980 7500 Potassium hydroxide for industrial use - Determination of calcium content - EDTA ( disodium sait) complexometric method《工业用氢氧化钾，钙含量的测定 乙二胺四乙酸（二钠盐）》.pdf 2

NBN T 03-193-1980 7500 Potassium hydroxide for industrial use - Determination of calcium content - EDTA ( disodium sait) complexometric method《工业用氢氧化钾，钙含量的测定 乙二胺四乙酸（二钠盐）》.pdfNBN T 03-193-1980 7500 Potassium hydroxide for industrial use - Determination of calcium content - EDTA ( disodium sait) complexometric method《工业用氢氧化钾，钙含量的测定 乙二胺四乙酸（二钠盐）》.pdf

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NBN S 01-206-1979 1250 Acoustics - Determination of sound power levels of noise sources -Survey method《声学 声源所发出的声音音量等级的测定 控制方法》.pdf 17

NBN S 01-206-1979 1250 Acoustics - Determination of sound power levels of noise sources -Survey method《声学 声源所发出的声音音量等级的测定 控制方法》.pdfNBN S 01-206-1979 1250 Acoustics - Determination of sound power levels of noise sources -Survey method《声学 声源所发出的声音音量等级的测定 控制方法》.pdf

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NBN S 01-205-1979 4375 Acoustics - Determination of sound power levels of noise sources -Prcecision methods for anechoic and semi-anechoic rooms《声学 声源所发出的声音音量等级的测定 吸声室和半吸声室的实验室方法》.pdf 26

NBN S 01-205-1979 4375 Acoustics - Determination of sound power levels of noise sources -Prcecision methods for anechoic and semi-anechoic rooms《声学 声源所发出的声音音量等级的测定 吸声室和半吸声室的实验室方法》.pdfNBN S 01-205-1979 4375 Acoustics - Determination of sound power levels of noise sources -Prcecision methods for anechoic and semi-anechoic rooms《声学 声源所发出的声音音量等级的测定 吸声室和半吸声室的实验室方法》.pdf

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NBN S 01-203-1979 8750 Acoustics - Determination of sound power levels of noise sources -Engineering methods for special reverberation test rooms《声学 声源所发出的声音音量等级的测定 特殊回音测验室的鉴定方法》.pdf 21

NBN S 01-203-1979 8750 Acoustics - Determination of sound power levels of noise sources -Engineering methods for special reverberation test rooms《声学 声源所发出的声音音量等级的测定 特殊回音测验室的鉴定方法》.pdfNBN S 01-203-1979 8750 Acoustics - Determination of sound power levels of noise sources -Engineering methods for special reverberation test rooms《声学 声源所发出的声音音量等级的测定 特殊回音测验室的鉴定方法》.pdf

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NBN S 01-202-1979 5625 Acoustics - Determination of sound power levels of noise sources -Precision methods for discrete-frequency and narrow-band sources in reverberation rooms《声学 .pdf 13

NBN S 01-202-1979 5625 Acoustics - Determination of sound power levels of noise sources -Precision methods for discrete-frequency and narrow-band sources in reverberation rooms《声学 .pdfNBN S 01-202-1979 5625 Acoustics - Determination of sound power levels of noise sources -Precision methods for discrete-frequency and narrow-band sources in reverberation rooms《声学 .pdf

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