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The RCA is a rigorous standard by which to consider competitive exportation in the global market. In order to exclude marginal exports, a country is said to export a product when they exhibit a Revealed Comparative Advantage (RCA) in it. Using the Balassa definition of RCA, x(c,i) equals the value of exports in country c in the ith good.

The RCA is a rigorous standard by which to consider competitive exportation in the global market. In order to exclude marginal exports, a country is said to export a product when they exhibit a Revealed Comparative Advantage (RCA) in it. Using the Balassa definition of RCA, x(c,i) equals the value of exports in country c in the ith good.

RCA 是一个严格的标准，用以考虑在全球市场的竞争性出口。为了将边际出口排除在外，一个国家如果出现显示比较优势，就称之为出口。使用巴拉萨的 RCA 定义，x (c，i)等于 c 国在第 i 货物中的出口价值。

RCA 是一个严格的标准，用以考虑在全球市场的竞争性出口。为了将边际出口排除在外，一个国家如果出现显示比较优势，就称之为出口。使用巴拉萨对RCA的定义，x(c,i)等于c国在第i货物中的出口价值。

<math>\text{RCA}_{c,i}=\frac{{x(c,i)}/{\sum_i x(c,i)}}

<math>\text{RCA}_{c,i}=\frac{{x(c,i)}/{\sum_i x(c,i)}}

<math>\text{RCA}_{c,i}=\frac

<math>\text{RCA}_{c,i}=\frac{{\sum_c x(c, i)}/{\sum_{c,i}x(c,i)}}</math>