3D打印技术发展迅速,许多专家建议把这项技术介绍给更多的中学生.
The 3﹣D printing is developing fast.Manyexperts suggestthat it should be to more middle school students.
3D打印技术发展迅速,许多专家建议把这项技术介绍给更多的中学生.
The 3﹣D printing is developing fast.Manyexperts suggestthat it should be to more middle school students.