结果5例HIV脑炎中，3例表现为双侧大脑半球白质区对称性异常信号，2例表现为脑萎缩。
Results 3 cases showed the symmetry signal abnormal in bilateral whiter matter and 2 cases showed brain atrophy in 5 patients with HIV encephalitis.
记录和分析了高功率激光焊接中工作区的紫外和红外信号，着重分析了双波段信号与离焦量变化的对应规律。
Dual waveband signals in high power laser welding were recorded and analyzed, especially, the law between the signals magnitude and the defocusing was discussed.
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