1. When melting cast iron for rollers in main frequency induction furnace, the recarburization of the molten iron could be effectively achieved by using new types of recarburizer .

2. The paper introduces today's main frequency constant water supply system and makes the compassion and analysis.

3. Therefore, the main frequency can be used to calculate the shape change of ripple springs quantitatively and the looseness of slot wedges can be estimated.

4. Moreover, it descends linearity with the main frequency of wave packet.

5. The flat-earth makes the main frequency of the interferogram not at the zero frequency, and can't reflect the change of the topographic altitude.

6. From the calculating results, the main frequency of rail and sleeper lateral vibration is low.

7. The results showed that the main frequency of the earthquake wave produced by the source is higher obviously than ordinary seismic explosive columns.

8. Step four : the main frequency spectrum of the acoustic analysis.

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9. Analyze the distribution of internal noise and main frequency ingredient with different speed.

10. The results show that the main frequency of the acoustic signal increases with the shape change of the ripple spring located under the slot wedge.

11. The final result provide the curve of main frequency changing in time.

12. Electron main frequency and electron main duty of stomach were assayed at the same time.

13. Then the graph of the changes of group and energy velocity with the length of cutoff region and the main frequency of the wave packet is received.

14. If the cross terms of the spatial frequencies for the unit cell of periodical object are much smaller than the main frequency terms, the restriction of the angle is not necessary.

15. The effect of the scattered wave from cave on amplitude of the direct wave is significant while the effect on main frequency of the direct wave is small.

16. However, it is not suitable for the signal of the transmission-ratio-variable machine, because there is not only one main frequency in the system, and the multi-shaft order analysis is needed.

17. In this paper we zoom some regions of FFT spectrum by the Fourier transform, get the precise value of some main frequency, and thus greatly improve the frequency discrimination of FFT spectrum.

18. The results of model analysis indicated that the resonance phenomenon would not occur because the slope inherent frequency is well lower than the main frequency of blasting vibration.

19. Three types of crystal were compared, we select LBO as the main frequency doubler.

20. Through the single - group analysis, I filter the vibration signal which is main frequency.