求翻译：本研究选择60例Ⅱ～Ⅳ度压疮患者，随机分为两组，在治疗原发疾病的基础上，对30例患者外用全蝎膏治疗，并与30例外用龙血竭胶囊进行对照观察。是什么意思？

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The present study II ~ IV degrees choose 60 laws, pressure sores patients random divided into two groups, and in the treatment of the disease, based on the 30 cases, treatment, and anointed with the spirit and 30 exceptions in Lung blood capsules compare depletion observation.

This research chooses 60 examplesⅡ~ⅣThe pressure sore patient, divides into two groups stochastically, at in the treatment primary disease foundation, to 30 example patient external use dried whole scorpion paste treatment, and uses up the capsule with 30 exceptions with Long Xue to carry on the com

This study selection in 60 cases of ⅱ ~ ⅳ degree bedsore, randomly divided into two groups, in the treatment of primary diseases on the basis of, for external use in patients with Scorpion cream in the treatment of 30 cases, and to control observation on 30 cases of resina Draconis capsule.

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