用该工艺方法加工亚微米碳化硅粉体，不需再次分级、粉体分布窄、一致性好，性能达到国外同类产品水平。

The powder produced by the method mentioned had narrow particle distribution and good consistence, which did not need further classification and could reach export product standard.

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木材分开后，分级工再次标记等级。

Again, after the lumber has been separated, the grader assigns a grade.

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再次，您在您的课程提要看见，分级在一个期中和最后试验取决于您的表现，周期性测验，研究计划，并且教室参与。

Again, as you see on your course outline, grading is determined by your performance on a midterm and final test, periodic quizzes, a research project, and classroom participation.

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