By strong fluctuation stimulation of a proper initial function the frequency-locking effect is observed not only in P_2-wave, but also in P_4 wave.
适当初函数的强扰动激发不仅在P_ 2波观察到锁频效应，在P_ 4波也证实了锁频效应的存在。
2
Frequency offset locking technology is widely applied in laser heterodyne detection and laser radar, which is of great value.
偏频锁定技术广泛应用于激光的外差探测、激光雷达等方面，具有重要应用价值。
3
The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequencylocking property when system transits from chaotic to great periodic motion.