The widthof the reservoir illustrated here is approximately 8 kilometers (5 miles); a jet flying over the reservoir left a contrail midway between the shorelines.
图片中显示出的水库宽度大约为8千米(5英里),一架从上方飞过的飞机在水库两岸之间留下了一条航迹云。
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Increase the compression degree can make arc of high temperature plasma jet extended, form more uniform high temperature area, and increase the speed of the jet, can reduce the widthof the poor.