Ahad
幼苗
共回答了22个问题采纳率:81.8% 举报
The school encourages students to make some small inventions or small production in their spare time, don't be afraid of failure, as long as you do, the final will be successful. If the small invention has practical use value, you can apply for a patent
望采纳~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1年前
9