ピッツバーグの主要産業は何
The economy of Pittsburgh, Pennsylvania, is diversified, focused on services, medicine, higher education, tourism, banking, corporate headquarters and high technology. Once the center of the American steel industry, and still known as "The Steel City", today the city of Pittsburgh has no steel mills within its limits, though Pittsburgh-based companies such as US Steel, Ampco Pittsburgh and Allegheny Technologies own several working mills in the Pittsburgh metropolitan area.
services, medicine, higher education, tourism, banking, corporate headquarters and high technology