近年来,随着全球贸易的不断增长,许多国家的港口已经成为一个明显的空气污染源,但相对于其他易产生污染的产业,比如制造业和公路运输业等,港口所造成的污染一直未引起环保部门足够的重视。今后这种状况将有很大改观,因为数量更多、要求更严的环境标准将引入港口业。一、港口机 In recent years, with the continuous growth of global trade, ports in many countries have become an obvious source of air pollution. However, the pollution caused by ports has not been elicited relative to other pollution-prone industries such as manufacturing and road transport industries Environmental protection departments pay enough attention. In the future, this situation will be greatly improved, because more quantities require more stringent environmental standards will be introduced into the port industry. First, the port machine