Injection sclerotherapy, superficial vein ligation and stripping, deep vein valve reconstruction, perforator ligation, and skin grafting favor the healing of ulcers.
硬化剂注射、浅静脉手术、深静脉瓣膜重建手术、交通静脉结扎术及皮肤移植均有利于溃疡愈合。
2
The retrofit is given of the prilling basket, second stage evaporation separator and control valve for pressure in the hydrolysis system in a urea unit based on the ammonia stripping process.