从广义上说,耐磨性是反映磁带涂层磁性物质的脱落情况。实际上涂层磁性物质的脱落有两种不同情况。一是涂层磁性物质随放音次数的增加逐渐地、少量地脱落,电平呈逐渐地、少量地下降,即通常所说的耐磨程度;二是涂层磁性物质随放音次数的增加随机地、大量地脱落,电平呈随机地、较大幅度地下降,即通常所说 In a broad sense, the wear resistance reflects the loss of the magnetic material of the tape coating. In fact there are two different cases of coating magnetic material shedding. First, with the increase in the number of magnetic coating with the increase in the number of playback, a small amount of off, the level was gradually, a small amount of decline, which is commonly referred to as the degree of wear; the second is coated magnetic material with the increase in the number of playback Randomly, a large number of off, the level was random, more substantial decline, which is usually said