Like other profiles built on top of the serial port profile, the virtual serial link created by the lower layers of the Bluetooth protocol stack is transparent to applications using the DUN profile.

和其他建立在串口配置文件之上的配置文件一样，被更低层蓝牙通信协议实现的虚拟串行链接对使用DUN配置文件的应用程序是透明的。

youdao

It opens directly onto the park and the transparent walls create an important interior-exterior link.

面向公园的地理位置和透明的玻璃墙使室内外空间紧密相连。

youdao

Any link demand that would be satisfied by security-transparent code becomes a full demand.

安全透明的代码将满足的任何链接要求都会变成完全要求。

youdao

But council leader Drew Hendry denied the local authority had been unduly influenced by commercial companies, and he said the West Link process was transparent.

BBC: Stromeferry bypass