远端壁内扩散可同时或分别沿黏膜层、黏膜下层、内环肌层、外纵肌层和浆膜层进行。

Distal intramural spread could be via mucosa, submucosa, inner circular muscular layer, outer longitudinal muscular layer or serosa, either separately or concomitantly.

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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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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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