胶合料 meaning in Chinese

laminating composition

But during the construction of high - grade highway , our highway departments have concentrated on the capacity of pitch mixtures and ignored the capacity of the rock materials . the small scale , clutter kinds , high cost and different quality of rock material production lead to the large gap between the standard of our pitch pavement and foreign modern standard
但在高等级公路的建设过程中，我们的公路部门大都将注意力集中于沥青胶合料的性能上，往往忽视了矿料的性能，加上石材生产规模性差、品种杂、成本高、质量参差不齐等问题，使得我国沥青路面的建设水平与国外先进水平相比差距较大。