Using the self experience molecular orbit theory(complete neglect differential overlap)(CNDO/2), this paper calculates the bond length of Silicon Hydrogen in the Silane molecular system, works out a theory formula about the relationship between the extending vibration frequency and bond length of Silicon Hydrogen in Silane molecular system.

The relation between the stretching vibration frequency of X = 0 double bond of alkyl substituted compounds R' X = 0 and the Polarizability Effect Index (PEI) of alkyl group R can be expressed as v = a + bPEI (R), where X represents C, and N elements.

The vibrational frequency is an important parameter of molecular structure.

In this paper, an equation is obtained through researching the reqularity of the vibrational frequency of the Chemical bond A-H by using the average nuclear potential of the valence electrons and the average energy of valence orbitals.

The vibrational frequency,the effectiv e Hamiltonian and the induced potential of a strong coupling surface magnetopola rons in a polar crytal were derived by using the linear combination operator met hod.

Matching relation between casting billet speed and vibration frequency during billet CC;

Effect of vibration frequency on relevant behavior of satulated soft clay;

Experimental study on influence of vibration frequency to dynamic modulus and damping ratio characteristics of saturate sandy pebble soil;