新设备存在一些技术问题。

There are a few ___technical problems with the new equipment.

由于音响系统的技术故障，音乐会被推迟了。

The concert was delayed because of a ___technical issue with the sound system.

建造这座桥需要大量的工程技术专业知识。

Building this bridge required a lot of ___technical expertise in engineering.