笔者根据多年的教学经验，指出了正确运用通量法则的关键：理解回路、选对回路。
According to many years' experience of teaching physics, the author points out the key of correct wielding the principle of flux: to understand and select the loop.
笔者根据多年的教学经验，指出了正确运用通量法则的关键：理解回路、选对回路。
According to many years' experience of teaching physics, the author points out the key of correct wielding the principle of flux: to understand and select the loop.
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