The application of a modified PVC (PVCR) partly instead of NR, BR or SBR in rubber hose and belt production was investigated.

考察了易与橡胶共混的改性聚氯乙烯树脂(PVCR)在通用橡胶(NR, BR和SBR)和胶管、胶带胶料中的应用情况。

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No grafting shedding or loosening occurred. PVCR is an effective alternative and can obtain good correction for severe rigid angular kyphoscoliosis patients.

提示严重且僵硬的角状脊柱畸形患者，采用经后路全脊椎切除加椎弓根钉棒系统内固定可获得良好矫形效果。

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