B, barrier type protective effect when the cold sprayed zinc coating is oxidation, will produce a layer of zinc salt in the coating surface to provide barrier protection.

屏障式保护作用当冷喷锌涂料被氧化时，会在涂料表面产生一层锌盐层来提供屏障保护。

youdao

AIM: To evaluate the effect of soft contact lens using after excimer laser corneal refractive surgery as a physical barrier.

目的：了解亲水性软性角膜接触镜作为物理屏障在准分子激光屈光性角膜手术的作用。

youdao

Conclusion Routine use of antacids on the gastrointestinal mucosa barrier function injury in patients with high altitude pulmonary edema has a significantly protective effect.

结论常规应用制酸剂对高原肺水肿患者胃肠黏膜屏障功能损伤具有明显的保护作用。

youdao