Aircraft engineers have for years sought to replace metal components with lightweight plasticsreinforced with carbon fibres.
飞机工程师们多年来探索使用轻质强化碳纤维塑料代替金属部件。
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Transmission or conveyor belts or belting, of textile material, whether or not impregnated, coated, covered or laminated with plastics, or reinforced with metal or other material.