求翻译：信号与系统课程是一门理论性与应用性并重的课程，该课程以高等数学、复变函数、电路分析等课程为基础，同时又是数字信号处理、通信原理等课程的基础，在课程体系中有着承上启下的作用是什么意思？

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Signal and Systems course is a theoretical and applied, and of course, the courses to advanced mathematics, after changing functions, circuit analysis courses, such as the foundation, and at the same time, the digital signal processing and communication theory courses, such as the basis for the syst

The signal and the system curriculum are curricula which theoretical and the utility pay equal attention to, this curriculum take higher curricula and so on mathematics, complex variable function, circuit analysis as a foundation, simultaneously also is curriculum and so on digital signal processing

Signal and system course is a theoretical and applied courses, courses in advanced mathematics, such as complex analysis, circuit analysis course is based as well as Foundation courses such as digital signal processing, communication theory, connecting role in the curriculum

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