VERY HARD MATERIALS
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BTTYPES OF MATERIALS
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UDC620.22*1
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Descriptor GERSEHR HARTE WERKSTOFFE
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Descriptor ENGVERY HARD MATERIALS
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Descriptor FREMATÉRIAUX TRÈS DURS
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Variant GERHARTE WERKSTOFFE/SEHR HARTE WERKSTOFFE
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Variant GERWERKSTOFFE/SEHR HARTE WERKSTOFFE
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Variant GEREXTREM HARTE WERKSTOFFE
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Variant ENGMATERIALS/VERY HARD MATERIALS
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Variant ENGHARD MATERIALS/VERY HARD MATERIALS
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Variant ENGEXTREME HARD MATERIALS
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Variant FREMATÉRIAUX DURS/MATERIAUX TRÈS DURS
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Variant FREMATÉRIAUX EXTRÊMEMENT DURS
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NTDIAMONDS, VERY HARD STONES (STONE INDUSTRY)
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NTGRAPHITE + DIAMONDS + DIAMOND-LIKE CARBON (INORGANIC CHEMISTRY)
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NTCORUNDUM (MINERALOGY)
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NTSYNTHETIC DIAMONDS (TECHNICAL CHEMISTRY)
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NTSYNTHETIC CORUNDUMS (STONE INDUSTRY)
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RTHARD METALS + HARD ALLOYS (METALLURGY)
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RTMETAL SILICIDES (INORGANIC CHEMISTRY)