论文部分内容阅读
在中学阶段,零向量的概念及相关的平行和垂直的说法不止一种,常常给教学和阅读带来不便,有必要重新考证一下.
In the secondary stage, the notion of zero vectors and the associated parallel and vertical terms are more than one, often causing inconveniences in teaching and reading and necessitating re-examination.