Rural merchants relied on the commodity economy to speed up the disintegration of the natural economy and the birth of the new production relationship.
农村商人以农民的商品经济为依托，加速了自然经济的瓦解和新生产关系的产生。
2
As a product from the uranium disintegration, radon is a natural radioactive idle gas.
氡是天然放射性惰性气体，是铀系衰变链中的一个衰变产物。
3
And experimental studying on natural rock simulating the phenomenon of zonal disintegration.