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    超声波测厚仪不仅可以测量金属材料的厚度，很多质地均匀的非金属材料也是超声波测良导体，下面我们介绍10种材料的超声波测厚仪在测量时的声速。

材料名称                   材料英文名                     声速 
                                                                              In/us          m/s
尼龙                          Nylon                                 0.105         2680
丙烯酸（类）树脂 Acrylics acid resin           0.109         2760
环氧树脂                   Epoxy resin                      0.1               2540
冰                                 Ice                                  0.157           3988
树脂玻璃                     Plexiglas                       0.106            2692
陶瓷                           Porcelain                          0.23            5842
聚氯乙烯                    PVC                                0.094            2388
石英                             Quartz                            0.222            5639
硫化橡胶         Rubber vulcanized                   0.091            2311
水                               Water                                0.058           1473