Vacuum heat treatment is the new technique in the heat treatment of metallic material.
真空热处理是金属材料热处理领域的新技术。
Objective: To observe the effect of vacuum-sealing technique on the wound healing.
目的：观察负压封闭治疗创面的效果。
Objective: To observe the effect of vacuum-sealing technique on the wound healing.
目的：观察负压封闭治疗创面的效果。
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