Livermore Municipal Airport: (87 km) Passing clouds. (1 hour ago) More weather in USA Forecast for the next 2 weeks 星期日星期一星期二星期三星期四星期五星期六 4 26 / 11 °C 5 28 / 12 °C 6 30 / 11 °C 7 31 / 10 °C 8 33 / 11 °C 9 34 / 13 °C 10 35 / 12 °C...
26. The method of claim 22 wherein the operation of directing a first signal toward the material from the vehicle travel surface is performed from a vehicle, the operation of receiving a second signal generated in response to the first signal is performed from a vehicle, and the operation of...