1. Methods The effects of erasion management in the 57 cases of face burn were reviewed according to the post-operative effect and the pigmentation rate on face later retrospectively.

2. The distinct between bill forgeries, change and erasion should be noticed in practice.

3. Finally, the collision counts per particle in a pipe is calculated and the erasion issues of valves and pipes caused by the particles is also discussed.

4. Most think it nonsense to get to know things far away from our daily life, whereas we constantly dispute the erasion of emptiness.

5. The control of plant"s dynamic response and plant"s disturbance erasion is respectively done. They don"t impact each other. So we can best enhance the system"s performance and erase disturbance.