An Angle trisecting unit belongs to teaching AIDS for teaching.

三等分角器是属于教学用的教具。

youdao

They also served as teaching AIDS for Knief during his tenure at the University of New Mexico, and served to illustrate his books.

在新墨西哥大学任教期间，柯尼弗还将它们当作教辅工具，作为教科书的插图。

youdao

The foreign teachers should be offered the necessary books, materials, reference books and teaching AIDS for teaching and scientific research.

向外籍教师提供教学科研必需的图书、参考资料、工具书和教具。

youdao

The trainees will learn how to use the full potential of information available on the Internet for non-teaching tasks, such as supporting children affected by HIV and AIDS - an increasingly important duty for South African teachers.

UNESCO: MEDIA SERVICES