挤护套护套
Squeeze sheath sheath
以上为机器翻译结果，长、整句建议使用 人工翻译 。
护套：挤包在内护层上的护套应采用PVC . ST4型聚氯乙烯混合物。
Sheath: PVC. ST4 model PVC mixture should be adopted as the inner sheath.
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缆芯外挤上一层聚乙烯内护套，双面涂塑钢带(psp)纵包后挤制聚乙烯护套成缆。
After the PSP is longitudinally applied over the inner sheath, the cable is completed with a PE outer sheath.
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