The functions of nonmetal materials to improve the parameters of satellite, reduce the mass of satellite structure and increase the effectivepayload of satellite were stressed.
强调了非金属材料在提高卫星性能、减轻卫星结构质量，以及增大卫星有效载荷方面的作用。
2
Research result shows that system can carry out effective surveillance and measure of the data such as train speed, direction, unusual condition and payload.