法国一家从事公路建设和维护的企业Colas公司与法国国立综合理工学院合作,研制出了一种新的高性能公路隔音墙板。这种新的隔音墙板对噪声的吸收性能达到了前所未有的水平,根据墙体的配置,对噪声的吸收效率比现有的效率最高的隔音板还要高出30%～50%。因为此项发明,国立综合理工 Colas, a French road construction and maintenance company, has partnered with the National Institute of Integrated Technology in France to develop a new high-performance highway acoustic wall panel. The new sound-absorbing wallboard absorbs noise to an unprecedented level. According to the wall configuration, the noise absorption efficiency is 30% ~ 50% higher than that of the existing most efficient noise insulation board. Because of this invention, National Institute of Technology