电话普及率的英文怎么说

电话普及率的英文：
penetration rate of telephone

tip penetration
磁头尖插入度

The nail will not penetrate.
这枚钉子钉不进去。

These are the result of the penetration of the larvae into the crypts
这些是幼虫钻入滤泡的结果。

cumulative rating
累积收听率

These bonds have an AAA rating.
这些债券的信用度是3A级的。

To rate too low;underestimate.
低估对…估价太低；低估

Receptionists'telephones are always engaged.
接待员的电话总是占线。

I have to make a telephone call.
我必须打个电话。

I telephoned to thank her.
我打电话向她道谢。