two main system meaning in English

双线制

And some other countries adopt the system of reporting the losing of bills and stopping the payment besides the two main systems . our country assimilates the practice of the countries in the two main law systems
我国票据法律制度中吸收两大法系的制度,挂失止付、公示催告和普通诉讼兼有,构成了我国票据丧失救济制度。
In this chapter , the author makes some comments on the major theories of the two main systems as well as on the releative achievements of the strategical management theories of enterprises , strategical coalition theories , organizational theories and network theories of enterprises
本章对这两大体系的主要学说进行了评述，同时对20世纪80年代以来企业战略管理理论、战略联盟理论、企业组织理论、网络理论的相关成果进行了评述。