中文摘要：

戒指波浪包的繁殖(一个信封调制的搬运人波浪镇静) 由水落下产生了试验性地被学习。与经常的速度和低散开宣传是一个局部性的波浪包的。波长，振幅和搬运人波浪，搬运人波浪的速度和包的波形被测量了。测量波长 λ _{搬运人波浪和测量的组速度 C 的 e 包的 ge} 在最小附近组速度的分散曲线指，它可以是包能与低散开宣传的主要原因。

英文摘要：

The propagation of ring wave packet （composed of carrier waves modulated by an envelope） generated by a water drop was studied experimentally. It is a localized wave packet propagating with constant velocity and low diffusion. The wavelength, the amplitude and the waveform of the carrier waves, the velocity of the carrier waves and the packet have been measured. The measured wavelength λa of the carrier waves and the measured group velocity Cge of the packet are near the minimum point of the dispersion curve of group velocity, which may be the main reason why the packet can propagate with low diffusion.