grain tank unloader

例句：

1. 1. The grain tankunloader is used to load and unload grain from the storage tanks.
   谷物罐卸载器用于从储存罐中装载和卸载谷物。
2. 2. The grain tank unloader is a critical component of the grain handling system.
   谷物罐卸载器是谷物处理系统的关键组成部分。
3. 3. The grain tank unloader was designed to improve efficiency in the grain handling process.
   谷物罐卸载器被设计用来提高谷物处理过程的效率。