The main technical problem was bearing inner diameter profile grinding, during processing new product YA2, so that the diamond contact roller adjuster was designed.

新产品YA2轴承加工中的主要技术难点是轴承内径成形磨削，为此设计了金刚石滚轮修整装置。

youdao

The province's main power station at Kilroot, near Belfast, was shut down following a technical problem with generators and the other power station at Ballylumford, near Larne, was only partially working.

BBC: Parts of the province were left without power