A coal stove with a hopper that automatically replenishes itself from above as lower layers of fuel are consumed.
底燃火炉，自动填煤火炉：一种带有漏斗的煤炉，当下层燃料燃尽时，它会自动地从上面补充。
2
The use of commonly used power-driven pulley, the principal organs of an organism, moving teeth set teeth set disk, Central screen, feed hopper and other parts, and fuel used to crush grain.