Each asphalt layer assume different function, performance of the designed asphalt mixture should be adapted to their respective structure layer functional requirements.
各沥青结构层承担不同功能，设计的沥青混合料性能应适应各自结构层层位功能需要。
Each asphalt layer assume different function, performance of the designed asphalt mixture should be adapted to their respective structure layer functional requirements.
各沥青结构层承担不同功能，设计的沥青混合料性能应适应各自结构层层位功能需要。
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