The process of rotational foaming molding of liquid reactive resin was studied, with unsaturated polyester resin as the shell of unfoamed resin moulded part, and polyurethane as foamed core layer.
以不饱和聚酯树脂作为非发泡树脂成型制品的外壳，用聚氨酯树脂发泡形成泡沫芯层，研究了液体反应树脂的旋转模塑发泡成型泡沫夹层制品的工艺过程。
The magnet and yoke are fully encapsulated during the molding process to completely surround the magnet and yoke in a protective plastic shell.
磁体和轭在成型过程中进行完全封装，以便将磁体和轭完全包围在保护性塑料壳内。
The magnet and yoke are fully encapsulated during the molding process to completely surround the magnet and yoke in a protective plastic shell.
磁体和轭在成型过程中进行完全封装，以便将磁体和轭完全包围在保护性塑料壳内。
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