从世界范围内的产业发展来看，寡头垄断（经济集中型垄断）是当前经济发达国家产业发展所采取的一种最普遍的市场结构类型。
It can be seen in the global industry development that oligopoly ( economic integration monopoly ) is the most common type of market structure in industry development adopted by current developed nations .
经济集中型垄断