产权约束是现代企业制度的基础；
Equity restriction constitutes the foundation on which modern enterprise system is built.
产权结构是界定一种经济制度的基本要素，其中包括了各种各样的约束和局限条件。
The property right structure was the basic essential factor to define one economic system, including the various restraints and the limitation conditions.
运用新细胞的另一个优势是不用受知识产权的约束。
Another possible advantage could be fewer intellectual property restrictions.
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