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AN APPARATUS FOR THE PRODUCTION OF PIPES OR TUBES OF SYNTHETIC PLASTICS MATERIAL CONTAINING AN INTERNAL PARTING WALL.
AN APPARATUS FOR THE PRODUCTION OF PIPES OR TUBES OF SYNTHETIC PLASTICS MATERIAL CONTAINING AN INTERNAL PARTING WALL.
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机译:一种用于生产包含内部分隔壁的合成塑料材料管材或管材的装置。
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摘要
A pipe or tube of synthetic plastics material comprising one or more internal longitudinal parting walls, wherein the parting wall or walls is/are helically twisted.
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