论松茸多糖对辐射损伤小鼠免疫功能的防护作用_毕业论文_论文之家 关键词]：松茸多糖；辐射损伤；免疫功能 [gap=1098]Keywords] polysaccharide of tricholoma matsutake（PTM）；radiation breakdown；immunity
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breakdown radiation 辐射破坏
The results show: pulse power density from CO2 laser reaches air breakdown threshold through thrice reflecting focus system, and plasma radiation phenomena is observed in the experiment.
结果表明，脉冲co 2激光功率密度经三次反射激光聚焦系统达到空气击穿阈值，实验中观察到等离子体发光现象。
Radiation field spectra of the two concurrent breakdown processes are quite similar, indicating that the processes may be negative breakdown and may be caused by the same mechanisms.
这两种击穿过程均产生较强的辐射，且辐射频谱特征十分相似，表明云内闪电通道两端发生的击穿过程可能均为负击穿过程。
The base current and the junction leakage current increase, while the collector current and the breakdown voltage decrease for SiGe HBTs after radiation.
辐照后基极电流、结漏电流增大，集电极电流、击穿电压减小。
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