在第二个图中，我们可以看到，在200度以下和300度以下均呈现出硬度值

In the second figure, we can see that in 200 degrees and 300 degrees both showed a sudden drop in hardness values. Therefore, we can observe that this goes through three stages. The first stage is the 200-degree heat before the harvest stage. The second stage is recrystallized at between 200 degrees and 300 degrees, to form a new strain-free grains. The final stage is the perfect present grain growth after 300 degrees. There is also a change in the amount of 30% thinning, may be our error caused when doing experiments.

In the second graph, we can see a sudden drop in hardness values below 200 degrees and below 300 degrees. Therefore, we can observe that this goes through three stages. The first stage is the harvesting phase before the 200-degree high temperature. The second stage is recrystallization, forming new strainless grains between 200 and 300 degrees. The final stage is the perfect presentation of grain growth after 300 degrees. There is also a change in the 30% reduction, which may be due to errors in our experiments.

In the second figure, we can see that both below 200 and below 300 degrees show a sudden decrease in hardness. Therefore, we can observe that there are three stages to go through. The first stage is the harvesting stage before 200 degrees high temperature. The second stage is recrystallization. New strain-free grains are formed between 200 and 300 degrees. The last stage is the grain growth after 300 degrees. There is also a change in the 30% thinning, which may be caused by the errors in our experiments.<br>