high-voltage switchboard

例句：

1. 1.The high-voltage switchboard is essential for maintaining the electrical grid's stability.
   高压开关板对于维护电网稳定性至关重要。
2. 2.The engineers were tasked with replacing the old high-voltage switchboard with a new one.
   工程师们被指派用新的高压开关板替换旧的。
3. 3. The construction of the new high-voltage switchboard has been completed ahead of schedule.
   新高压开关板的建设提前完成。