例句與造句

1. If forced frequency is equal to the natural frequency, the amplitude of vibration increases manyfold.
2. Natural vibrations are different from forced vibrations which happen at frequency of applied force ( forced frequency ).
3. In a lightly damped system when the forcing frequency nears the natural frequency ( r \ approx 1 ) the amplitude of the vibration can get extremely high.
4. Also, the magnitude can be reduced if the natural frequency can be shifted away from the forcing frequency by changing the stiffness or mass of the system.
5. If the system cannot be changed, perhaps the forcing frequency can be shifted ( for example, changing the speed of the machine generating the force ).
6. It's difficult to find forcing frequency in a sentence. 用forcing frequency造句挺難的
7. Stability to global bending modes then requires that this forcing frequency be greater than \ Omega _ z, the frequency of orbital motion parallel to the short axis.
8. Hoping to divert the T-39 back on course, each station began hailing the plane on Air Force frequencies and a Soviet-monitored international distress band.
9. Vibration leads to failure when the " forcing frequency " of the machine's operation hits a resonant frequency of one or more moving parts, such as rotating shafts.
10. T > 1 means amplification and maximum amplification occurs when forcing frequency ( " f " f ) and natural frequency ( " f " n ) of the system coincide.
11. In these more realistic models, a typical star feels a vertical forcing frequency from a long-wavelength bend that is roughly twice the frequency \ Omega _ z of its unperturbed orbital motion along the long axis.
12. ICBM forces previously assigned to the inactivated Strategic Air Command ( SAC ) were merged into AFSPC in 1993 until moved into Air Force Global Strike Command ( AFGSC ) in 2009 . Air Force Space Command also became the lead MAJCOM for all Air Force cyberspace operations in 2009, gaining Air Force cyber operations and combat communications units, the Air Force Network Integration Center, and the Air Force Spectrum Management Office ( formerly known as the Air Force Frequency Management Agency ).