该机采用集草优良的凸轮结构，通过一次操作切换，可进行反转作业。

The machine use cam structure to invert the grass by one operation.

youdao

请按时提交问题集，我们不接受迟交的作业。

Problem sets are due on the due date. We will not accept late problem sets.

youdao

问题集作业将会占期末成绩的25%。

Problem sets will constitute 25% of your grade.

youdao

问题集作业将会占期末成绩的25%。

Problem sets will constitute 25% of your grade.

youdao