有外壳， 有硬皮变得覆有外壳，硬皮。

To become covered with a crust.

youdao

有外壳，有硬皮变得覆有外壳，硬皮。

To become covered with a crust.

youdao

目的评估内镜下食管覆膜自膨式金属支架植入术与经皮内镜下胃造瘘术(PEG)在气管食管瘘治疗中的应用价值。

Objective to assess the effects of self-expandable metallic stents (covered-SEMS) and percutaneous endoscopic gastrostomy (PEG) in the treatment of tracheoesophageal fistulas.

youdao