瘤结节通常出现在边缘，阻塞作用小。
The nodules are usually in the periphery and do not cause major obstruction.
结果表明第二相粒子对位错的阻塞作用是造成微裂纹产生和材料最终失稳的主要原因。
The research results show that the blocking of second phase to dislocation is the main reason to cause microcracking and final instability of the material.
复合材料低温下(77k)的体积电阻率明显高于纯sp，可以看作是库仑阻塞作用的结果。
Resistivity of the composite is much greater than that of pure SP under cryogenic temperature (77k), which is called Coulomb Blockade Effect.
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