问题如下：
1.The aim of the study is hard to understand from the introduction. Besides, the purpose and significance of this study are not clearly outlined in the introduction.
2.There are no statistics in this experimental study to make it worth discussing; by looking at Table 3. The data are too close to each other to be able to make reliable conclusions, or derive any trend.
3.Significant figures to two decimal places for composition (Table 2) and mechanical properties (Table 3) are very questionable.
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