产业内贸易定义与计量指标综述

20世纪60年代以来，国内外学者对产业内贸易现象进行了理论与实证解释，提出了各自对产业内贸易概念与计量指标的不同见解。学者们以SITC或者替代为基础提出了各自对产业内贸易概念的理解，并根据实证研究需要和对产业内贸易概念的不同理解提出一系列量度产业内贸易水平的指标：传统静态指标与双边动态指标，其中适用性最广的指标为G-L传统静态指数。

A review on the def in ition and measurable indicators of intra-industry trade

Since the 1960s, domestic and foreign scholars have explained the intra- industry trade from theoretical and empirical prospects and put forward their own different understandings of the concept and measurement indicator of intra- industry trade. Those concepts are put forward on SITC or substitutability basis, in order to measure the level of intra - industry trade they also give a series of measuring indicators, each one of which is in accordance with the scholar＇ s own understanding of the concept and his or her empirical research needs. Those indicators can fall into two categories： traditional static indicators and bilateral dynamic indicators, among which G - L index is used most frequently.