trial asphalt

例句：

1. 1.The engineer conducted a trial run of thenew asphalt mixture.
   工程师进行了新沥青混合物的试验运行。
2. 2. Theconstruction crew used trial asphalt to test the road's durability.
   施工队使用试验沥青来测试道路的耐久性。
3. 3.The trial asphalt was tested forits ability to withstand heavy traffic.
   试验沥青被测试以评估其承受重交通的能力。