液体的浇铸聚氨酯材料可机加工，并在过程中精确控制配方和温度。
Liquid castable polyurethane materials can be machine processed and dispensed with precise control over ingredient proportions and temperature levels.
前言： 目的：了解新型聚氨酯类液体根充材料的根管密封性能。
Objective:To investigate the root canal sealing ability of the novel polyurethane liquid root canal filling material.
液体敷料；聚氨酯凝胶垫；手术压疮；应用。
Liquid dressing; Polyurethane gelatum pads; Bedsore in operation patients; Application.
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