作者为研制按键电话用的大规模集成电路进行了大量的工作。

The work of this paper is to develop the LSI for use in push. button telephones.

youdao

好的，我现在得走了。如果您有什么需要，请给我打电话，或者按一下那边的按键。

Good. I'll leave you for now, If you need anything, just call me over the phone or press the button over there.

youdao

这是按键式电话。

This is a key phone.

youdao

这是按键式电话。

This is a key phone.

youdao