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试论中专物理中正负号的涵义及其处理郭宪生（太原铁路机械学校０３０００６）在中专物理中常见某些物理量带有正负号，真正弄懂这些正负号的意义是学生掌握物理概念和科学方法的一个重要环节．本文就此谈点浅薄的认识．１中专物理中正负号所表示的涵义１．１用正负号表示...
On the Implications of Signs in Secondary Physics and Its Treatment Guo Xiansheng (Taiyuan Railway Machinery School 030006) Some common physical quantities in secondary school physics have signs, and the meaning of truly understanding these signs is that students master physics. An important aspect of concepts and scientific methods. This article talks about shallow understanding. 1 The meaning represented by the sign in the secondary school physical sign 1.1 is indicated by the sign...