Nitrate group word pin group word cast pottery, but each group word

Treat with or combine with nitric acid or nitrate.

Nitrite, mineral name.

Nitric acid, a corrosive liquid inorganic acid.

Smoke, smoke produced after the explosion.

sell

Close the case and cancel the old case.

A pin, usually a cylindrical part made of wood, metal or other materials.

Destroy, melt, destroy

throw

Cast iron is a kind of iron with high carbon content, which is fragile and cannot be forged. Used for steelmaking or casting utensils.

Casting and molten metal forming technology.

surge

The sound of waves, the sound of waves beating against the coast.