... 共挤 co-extrusion 硬质发泡塑料 plastic of rigid foam 外可视面 external sight surface ...
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plastic of rigid foam
硬质泡沫塑料
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It is used to produce the model airplane without causing the tail to bend upwards. The difficulty for the stereotype of the rigid foam plastic wing with dome upper surface is solved.
它的目的用它制作航模，能克服制作尾部上翘，上表面略穹的硬质泡沫塑料机翼难以定型的困难。
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