The signs of LC and DC are hung on the outer wall of the warehouse. What do they mean respectively?

It should be Chinese phonetic abbreviation:

LC stands for vertical silo, generally 8~ 15m in diameter, with high grain loading height and appearing in groups;

DC stands for large-diameter silos, that is, shallow silos, whose diameters are generally between 15 and 35m, and appear in groups one after another, and walkways can be left between silos.

If you don't understand, keep asking me. I hope it can be adopted. Thank you ~ ~