国外标准列表
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[国外标准] BS EN 876-1995 destructive tests on welds in metallic materials — Longitudinal tensile test on weld
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[国外标准] BS EN 874-1995 Gas welding equipment — Oxygenfuel gas blowpipes (cutting machine type) of cylindrica
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[国外标准] BS EN 872-1996 Water quality Determination of suspended solids Method by filtration through glass fi