从传热学、物理状态变化和粘弹形变三方面阐述了微通道热压成形过程中塑料的流动机理。
Then plastic flow mechanics are depicted in three aspects as follows: heat transfer, physical state changing and viscoelastic formation.
有粘弹特性，可随头颈位置的改变，自动发生形变，随时保持与颈部紧密结合的位置。
Have the viscoelastic properties, with head and neck change in position, happen automatically deformation, keeping in touch with neck closely position.
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