heavy-duty transfer case

例句：

1. 1. This heavy-duty transfercase is designed to carry heavy loads.
   这个重型转运箱设计用来承载重物。
2. 2.The heavy-duty transfer case wasthe only way to transport the equipment acrossthe country.
   重型转运箱是唯一能将设备运输到全国的方式。
3. 3. Theheavy-duty transfercase was used to transport theheavy machinery from one location to another.
   重型转运箱被用来从一个地方运输重型机械到另一个地方。