ingot pit crane

例句：

1. 1. The ingot pit crane is used to lift heavy ore from the mine.
   矿渣堆起重机用于从矿井中吊起重矿石。
2. 2.The ingot pit crane is a critical piece of equipment for the mining industry.
   矿渣堆起重机是采矿业的关键设备。
3. 3.The ingot pit crane has been used for decades, and its design has been improved over time.
   矿渣堆起重机已经使用了几十年，其设计也随着时间得到了改进。