cogwheel ore

例句：

1. 1. The mine produces a variety of minerals, including cogwheel ore.
   该矿生产多种矿物，包括曲柄轮矿石。
2. 2. Cogwheel ore isa valuable resource for metallurgy.
   曲柄轮矿石是冶金业的重要资源。
3. 3. The mining company has been extractingcogwheel ore from the areafor decades.
   该矿业公司几十年来一直在该地区提取曲柄轮矿石。