Gastric emptying time of food is about 4 ~ 6 hours, after emptying, the stomach will continue to secrete gastric acid, if there is no food, stomach acid will be long-termerosion of gastric mucosa.
This was possibly due to the instability of TETA. Trough long-term leaching, TETA fell out for erosion.
这可能因为TETA形成的钝化膜并不稳定,经过长期的侵蚀作用而逐渐脱落。
3
The soil and water erosion of modern loess plateau is a result that human long-term unreasonable make use of the land resources to accelerate the nature erosion.