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TCVN 4921-1989 Brown coals and lignite Classification based on total moisture content and tar yield《褐煤 基于全水分含量和焦油产率的分类》.pdf 7

TCVN 4921-1989 Brown coals and lignite Classification based on total moisture content and tar yield《褐煤 基于全水分含量和焦油产率的分类》.pdfTCVN 4921-1989 Brown coals and lignite Classification based on total moisture content and tar yield《褐煤 基于全水分含量和焦油产率的分类》.pdf

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TCVN 4920-2007 Solid mineral fuels Determination of carbonate carbon content Gravimetric method《固体矿物燃料 二氧化碳含量的测定 重量法》.pdf 12

TCVN 4920-2007 Solid mineral fuels Determination of carbonate carbon content Gravimetric method《固体矿物燃料 二氧化碳含量的测定 重量法》.pdfTCVN 4920-2007 Solid mineral fuels Determination of carbonate carbon content Gravimetric method《固体矿物燃料 二氧化碳含量的测定 重量法》.pdf

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TCVN 4919-2007 Solid mineral fuels Coke Determination of moisture in the general analysis test sample《固体矿物燃料 焦炭 一般分析试样中水分的测定》.pdf 7

TCVN 4919-2007 Solid mineral fuels Coke Determination of moisture in the general analysis test sample《固体矿物燃料 焦炭 一般分析试样中水分的测定》.pdfTCVN 4919-2007 Solid mineral fuels Coke Determination of moisture in the general analysis test sample《固体矿物燃料 焦炭 一般分析试样中水分的测定》.pdf

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TCVN 4918-1989 Coal Determination of mineral matter《煤 矿物质的测定》.pdf 10

TCVN 4918-1989 Coal Determination of mineral matter《煤 矿物质的测定》.pdfTCVN 4918-1989 Coal Determination of mineral matter《煤 矿物质的测定》.pdf

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TCVN 4917-2011 Hard coal and coke Determination of ash fusibility《硬煤和焦炭 煤灰熔融性测定》.pdf 13

TCVN 4917-2011 Hard coal and coke Determination of ash fusibility《硬煤和焦炭 煤灰熔融性测定》.pdfTCVN 4917-2011 Hard coal and coke Determination of ash fusibility《硬煤和焦炭 煤灰熔融性测定》.pdf

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TCVN 4407-2010 Paper board and pulps Determination of dry matter content Oven-drying method《纸 纸板和纸浆 干物质含量的测定 烘箱干燥法》.pdf 11

TCVN 4407-2010 Paper board and pulps Determination of dry matter content Oven-drying method《纸 纸板和纸浆 干物质含量的测定 烘箱干燥法》.pdfTCVN 4407-2010 Paper board and pulps Determination of dry matter content Oven-drying method《纸 纸板和纸浆 干物质含量的测定 烘箱干燥法》.pdf

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TCVN 4404-1987 Cultivated soil Methods for determination of hydrolytic acidity《耕种土壤 水解酸度的测定方法》.pdf 6

TCVN 4404-1987 Cultivated soil Methods for determination of hydrolytic acidity《耕种土壤 水解酸度的测定方法》.pdfTCVN 4404-1987 Cultivated soil Methods for determination of hydrolytic acidity《耕种土壤 水解酸度的测定方法》.pdf

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TCVN 4403-2011 Soil quality Method for determination of exchangeable aluminium and acidity 《土质 互换铝和酸度的测定方法》.pdf 8

TCVN 4403-2011 Soil quality Method for determination of exchangeable aluminium and acidity 《土质 互换铝和酸度的测定方法》.pdfTCVN 4403-2011 Soil quality Method for determination of exchangeable aluminium and acidity 《土质 互换铝和酸度的测定方法》.pdf

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TCVN 4402-1987 Cultivated soil Determination of Phh2o《耕种土壤 Phh2o的测定》.pdf 5

TCVN 4402-1987 Cultivated soil Determination of Phh2o《耕种土壤 Phh2o的测定》.pdfTCVN 4402-1987 Cultivated soil Determination of Phh2o《耕种土壤 Phh2o的测定》.pdf

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TCVN 4401-1987 Cultivated soil Determination of Phkci《耕种土壤 Phkci的测定》.pdf 10

TCVN 4401-1987 Cultivated soil Determination of Phkci《耕种土壤 Phkci的测定》.pdfTCVN 4401-1987 Cultivated soil Determination of Phkci《耕种土壤 Phkci的测定》.pdf

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