top thickness

例句：

1. 1.The car's top thickness is measured in millimeters.
   这辆车的顶部厚度以毫米为单位测量。
2. 2. The steel plate has a top thickness of 5 mm.
   这个钢板的顶部厚度为5毫米。
3. 3.The thickest part of the wall is where the pipes run through.
   墙的最厚部分是管道穿过的地方。