核心服务将提供材料可靠性鉴别。

The core services will provide Positive Material Identification.

youdao

这些课程将开发那些在适合时将加入核心课程的材料。

These courses will develop the material that can be fed into the core courses when appropriate.

youdao

大部分的太阳能电池是用硅制造的，它是一种用于生产计算机核心部件的半导体材料。

Most solar cells are made from silicon-the same semiconductor material that is at the heart of computers.

youdao

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选