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;

On the basis of analyzing vibratory frequency control system of vibratory roller,the plan of vibratory frequency constant control by PID is put forward;a special controller is selected.

Higher vibratory frequency may decrease a little the value of the modulus.

On the basis of analyzing vibratory frequency control system of vibratory roller, the controller are designed and the plan of vibratory frequency constant control by PID are put forward.

Acoustic resonance frequency of volute casing of centrifugal fans;

Study on resonance frequency of the longitudinal-torsional ultrasonic motor by prestress;

The matrix analysis displacement vector and resonance frequency of ultrasonic transformers;