Coarsening grain and intercrystalline networkferrite depress crack growth resistance of the materials strongly and result in unstable propagation of crack very easily.
晶粒粗大及晶间网状铁素体强烈降低材料的裂纹扩展阻力，并极易导致裂纹的失稳扩展。
2
The basic operation principle, structural characteristics and microstrip impedance-matching network of ferrite film circulator are introduced.
介绍了采用铁氧体薄膜的微带环行器的工作原理、结构以及环行器阻抗匹配网络。
3
The feature of this network is that the cheap and mature nonreciprocal ferrite phase shiftersare used as the basic variable polarization devices.