We reported the main progress made in China in recent years of the study of ultrasonic tissue characterization-propagation velocity, attenuation, scattering and nonlinearity parameter, etc.
Besides bandwidth and latency, what other parameter is needed to give a good characterization of the quality of service offered by a network used for digitized voice traffic?
数字化的语音所经过的网络，除了对带宽和延迟有要求之外，还有什么参数影响它的服务质量？
3
Permeability is an important parameter for a oil reservoir characterization and engineering.