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[国外标准] BS EN 60034-18-31-1994 Rotating electrical published separately machines — Part 18 Functional evalua

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[国外标准] BS EN 12697-31-2004 Bituminous mixtures. Test methods for hot mix asphalt. Specimen preparation gyra

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[国外标准] BS 3424-31-1990 Testing coated fabrics. Method 34. Method for determination of resistance to scuffin

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[国外标准] JIS B9960-31-2004 Safety of machinery-Electrical equipment of machines-Part31：Particular safety and

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