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	GB/T 2787-1981 Keyboard for international information processing interchange using the 7-bit coded character set--Alpha-numeric area - 英文版
	GB/T 2683-1981 Test chart for facsimile transmission - 英文版
	GB/T 2541-1981 Petroleum products--Computation table for viscosity indices - 英文版
	GB/T 2413-1980 Piezoelectric ceramic materials--Measuring methods for determination of volume density - 英文版
	GB/T 2291-1980 Method for preparation of coal tar pitchs specimens - 英文版
	GB/T 2020-1980 Recording magnetic tape with 9 magnetic tracks， 12.7mm width and 32 lines/mm for informationprocessing exchange - 英文版
	GB/T 1989-1980 Methods for indication of the 7-bit encoding character set for information processing switching on 12.7 mm magnetic tape - 英文版
	GB 2312-1980 Code of Chinese graphic character setfor information interchange--Primary set - 英文版
	GB/T 1762-1980 Method of test for after-tack of paint films - 英文版
	GB/T 1814-1979 Inspection method for steel work fractures - 英文版
	GB/T 1765-1979 Method of producing of paint films for testing heat and humidity resistance，salt-fog resistance and accelerated weathering - 英文版
	GB/T 1749-1979 Method of test for consistency of pastes and putties - 英文版
	GB/T 1728-1979 Methods of test for drying time of coatingsof paints and putties - 英文版
	GB/T 1726-1979 Methods of test for hiding power of paints - 英文版
	GB/T 1724-1979 Methods of test for fineness of grind of paints - 英文版
	GB/T 1720-1979 Method of test for adhesion of paint films - 英文版
	GB/T 1748-1979 Method of test for flexibility of putty coatings - 英文版
	GB/T 1584-1979 Standard for insertion test signal of domestic TV - 英文版
	GB/T 1560-1979 Normal diameters for ventilation pipeline and accessories for ships metric series - 英文版
	GB/T 1417-1978 General terminology for telecommunications equipment - 英文版
	GB 188-1963 Locomotive and car clearance boundary and structure clearance boundary for 762mm gauge railways--Classification and basic dimensions - 英文版
	GB/T 185-1963 Fish-plates for 38 kg/m and 43 kg/m steel rails - 英文版
	GB/T 184-1963 Fish-plates for 50 kg/m steel rails - 英文版
	GB/T 305-2019 Rolling bearings－Snap ring grooves and snap rings for radial bearings－Dimensions，geometrical product specifications (GPS) and tolerance values - 英文版
	GB 21340-2019 The norm of energy consumption per unit products for glass products and cast stone - 英文版
	GB/T 12009.4-2016 (Plastics - Aromatic isocyanates for the production of polyurethane - Part 4: Determination of isocyanate content - amendment No. 1) - 英文版

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