文章从理论和实验两方面入手,对惠斯通电桥实验中电桥灵敏度与“桥”内阻大小关系进行讨论,所得结果对教师教学和学生很好完成该实验有较好的指导作用。%It discusses the relationship between the sensitivity and internal resistance of the ‘bridge ’ of Wheatstone bridge from the theory and the experiments. The result is good for teachers’ teaching and helps students complete this experiment better.
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