“utility bus”可以造什么句，utility bus造句

The three phase voitages on a utility bus are 215请写出用来判断电压数不平衡的两种方法.三相的电力系统是220方式?

The three phase voitages on a utility bus are 215Voltage Unbalance Rate (VUR) and Voltage Unbalance Factor (VUF)?

That affects GE's utility business.