例句與造句

1. All equipment in Division 1 areas must have an approval label, but certain materials, such as rigid metallic conduit, does not have a specific label indicating the Cl . / Div . 1 suitability and their listing as approved method of installation in the NEC serves as the permission.
2. It's difficult to find rigid metallic conduits in a sentence. 用rigid metallic conduits造句挺難的