single-row radial engine

例句：

1. 1. The new car has a single-row radiator that keeps it cool during the hot summer days.
   这款新车有一个单行的散热器，在炎热的夏天可以保持车辆凉爽。
2. 2. The old bus had a single-row radiator that was prone to leaking.
   旧巴士有一个容易泄漏的单行散热器。
3. 3.The engineer replaced the single-row radiator with a more efficient model.
   工程师用一个更高效的模型替换了单行散热器。