过去二十年内，人们逐渐认识到超氧歧化酶(SOD)对存在于生命体系中超氧游离基有抑制作用方面起着极其重要的意义。
In last twenty years, it has been known gradually that SOD is important in inhibition to superoxide free radical of life system.
作者对“带真皮下血管网皮片游离移植”(简称超全厚皮片)的生长机理进行了三个实验研究。
The authors made three tests on the mechanism of growth of free skin grafts with preserved subcutaneous vascular network.
本文研究了激光诱导化学气相沉积法制备纳米氮化硅的工作原理，提出了减少游离硅的措施，利用双光束激发制备了超微的、非晶纳米氮化硅粉体。
It is used in many areas. In this paper, the general principles of LICVD (laser induced chemical vapor deposition) were investigated and the measures to reduce dissociated si were put forward.
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