有没有缸盖废气再循环通道。

There is no EGR passage in cylinder head.

youdao

箱内设计有合理的热风循环通道，使箱内温度分布更加均匀。

Reasonable hot air circulation channel is designed in the cabinet, so that the temperature distribution in the cabinet is more even.

youdao

游客不能到达此层，会通过不同的循环通道体系直接通往屋顶餐厅。

Visitors have no access to this level and use different circulation systems to go past it to the rooftop restaurant.

youdao