An invention of the 1950s' called Unimate was the world's first what?

20世纪50年代发明的Unimate是世界上第一个什么？

In the 1950s, George C. Devol created Unimate, the world's first industrial robots.

20世纪50年代，George C. Devol创造了世界上第一个工业机器人Unimate。

The first commercial deployment was a programmable industrial robot called the Unimate, sold to General Motors in 1960 to lift hot pieces of metal from a die casting machine and stack them.

第一个商业部署是名为 Unimate 的可编程工业机器人，它于 1960 年卖给了通用汽车公司，用于从压铸机中取出热金属片并将它们堆叠起来。