在流场测试的基础上，采用等动采样的原理，对PD C型旋风管内的颗粒浓度分布进行了全面系统地测试。
Based on the measurement of flow field, the particle concentration distribution in the PDC type cyclone tube was studied by isokinetic sampling method.
根据BNRT不同工作状态下的内部电势、电子浓度和空穴浓度分布，解释了其S型负阻特性的产生机理。
According to the distribution of potential, electron and hole in the BNRT at different stages, the mechanism inducing S-type negative resistance characteristics is explained.
再用PHI 550型俄歇电子能谱仪测出上述样品金膜中银的浓度剖面分布。
After that the above samples have been analysed by AES (type PHI 550) and silver concentration profiles in the gold films have been obtained.
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