By the transfer matrix method, the resonant splitting for ballistic conductance of a two-dimension electron gas is studied in the presence of an inhomogeneous perpendicular magnetic field.

利用转移矩阵方法，研究了在非均匀垂直磁场作用下的二维电子气中弹道电导的共振劈裂。

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The strength of the coated diamond, the bonding force with the metallic matrix, heat resistance (sintering temperature of diamond bits) and conductance are all improved.

覆层后的金刚石强度、与金属胎体的结合力和抗温(烧结钻头时的温度)性能，以及导电性等有明显的提高。

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