The Non-excludability and Non-rivalry are basic characteristics of public goods.
公共产品具有受益的非排他性、消费的非竞争性两个基本特征。
参考来源 - 中国公共产品供给研究
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Excludability
abstract:In economics, a good or service is called excludable if it is possible to prevent people (consumers) who have not paid for it from having access to it. By comparison, a good or service is non-excludable if non-paying consumers cannot be prevented from accessing it.