给出了三代微光像管中微通道板离子壁垒膜对入射正离子阻止作用的描述，引进了核阻止本领、电子阻止本领和平均射程的概念。
The concepts of nuclear stopping power, electronic stopping power and average range were also introduced, the micrographs of unfilmed MCP and MCPs filmed with different thicknesses were shown.
根据三层不锈钢板电阻点焊熔核形成过程，建立了模拟三层板点焊温度场的轴对称有限元模型。
An axisymmetric finite element model is developed to simulate the temperature field of resistant spot welding according to the process of nugget formation of three layers stainless steel sheets.
结果：关节盘前移位后，双板区内可见部分细胞的胞核呈圆形或椭圆形，其内PCNA阳性。
Results: After ADD, some cells in the BZ appeared round or oval shape, in which PCNA was positive.
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