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This subject is the signal processing part of SDR system which belongs to a cooperative project — High-speed data transfer access system on monitoring railway security — with a company.
本课题来源于与公司的合作项目——铁路安全监控数据高速移动接入系统，属于其中的软件无线电信号处理部分。
Thirdly, the writer explained that the way we carry out the physics project learning is an effective access to cultivate the students' subject competence.
第三部分，阐述实施高中物理研究性学习课程是培养物理学科能力的有效途径。
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