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今秋开始使用的高中物理第一册(必修)中,6个必做的学生实验就有3个用到电磁打点计时器。做实验时用的高质纸带(电报纸)和复写纸片不仅价高且不易买到,提高它们的利用率就显得尤为重要。
Of the first book (required) for high school physics that began to use this fall, three of the six must-do students have used electromagnetic timers. The use of high-quality paper (electric newspapers) and carbon paper for experiments is not only expensive but difficult to buy, and it is particularly important to increase their utilization.