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最佳答案:Rubber anti-vibration products is mainly engaged in automotive design and struct
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最佳答案:The breakage of workpieces, or so called failures,takes place under the followin
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最佳答案:Magnesium alloys are the lightest structural engineering materials, which have m
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最佳答案:As a hexagonal honeycomb sandwich structure from the evolution from quasi-diamon