数学是现代文化的重要组成部分，数学思想方法向一切领域渗透，数学的应用越来越被社会所重视。
Mathematics is the modern culture important component, mathematics thinking method to all domain seepage, mathematics application more and more is taken seriously by the society.
复合码作为一种新兴的码制，兼容一维条码和二维条码的特点，在物流领域越来越被受到重视。
As a new barcode system, composite symbology has the features of one-dimensional barcode and two-dimensional barcode, which has got more and more attention in the field of logistics.
因其概念简单、参数较少、易于实现等特点，自提出以来已经受到国内外研究者的高度重视并被广泛应用于许多领域。
PSO is simple in concept, few in parameters and easy in implementation, so it has attach great importance to researchers home and abroad and found applications in many areas since its introduced.
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