According to the transmission coefficient formula on one coo rdinate scattering particles problem,the physics mechanism of power base penetrate from microcosmic angle is explained,and the resonance transmission and counting resonance are discussed.

Using numberical method,the paper studies resonanc transmission of a symmetric double well-potential in one-dimension,and the relations of resonance transmission with the width of potential well,of the space between of two potential well and of the energy of incident particular.

,The stationary state Schrdinger equation for the plane wave passing through a double δ potentialbarriers(well) with unequal strengths is investigated and the conditions o f the incident wave incurring the resonance transmission and the way to describe the substationary state are also analysed.

The investigation results show that two transmittance peaks exist at the crossover of the two photonic crystal PBG in 1-D dual-periodical photonic crystal.

The investigation results show that the band gap of the photonic crystal made of LHM is wide and multi-transmittance peaks appear in the forbidden band.

The resonance modes and related eigenfrequencies in the backscattering spectra are discerned based on the Flax s theory.