cross-compound engine

例句：

1. 1. The cross-compound engine is a complex machine that combines multiple functions into one unit.
   十字复合发动机是一种复杂的机器，将多个功能集成到一个单元中。
2. 2. This cross-compound engine has been proven to be more efficient than traditional engines.
   这种十字复合发动机已被证明比传统发动机更高效。
3. 3.In the construction industry, cross-compound engines are commonly used for heavy lifting and material handling tasks.
   在建筑行业中，十字复合发动机常用于重型起重和物料搬运任务。