After a review of software industry value chain and an analysis of problems existing in current research, a software park value chain model is developed, according to characteristics of software park.

本文首先回顾了软件产业价值链的研究概况，分析了目前研究存在的问题，结合软件园的特点提出了软件园价值链模型。

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First of all, the paper studies the causes of software outsourcing industry from a theoretical basis, which includes the value chain, the cost factors and spillover effects.

首先，本文从理论基础方面研究软件外包产生的原因，将价值链理论结合成本因素和溢出效应讨论软件外包业产生的原因。

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