专线zhuān xiàn
special railway line, special telephone line
生产线shēng chǎn xiàn
product line; production line; assembly line; line of production
点划线diǎn huá xiàn
chain line; dot dash line; dash dot line; long and short dash line
原声例句
Linear algebra
Since I had and you had, are both unit vectors projecting I hat onto the line, passing through you hat.
因为我和你都是 都是单位向量投影到直线上 穿过你。
Linear algebra
Focus in on what it does to one particular vector, and think about the span of that vector, the line passing through its origin and its tip.
关注它对一个特定向量的作用 考虑这个向量张成的空间 穿过原点和顶点的直线。
Linear algebra
However, in the unlucky case, where your two original vectors happen to line up, the tip of the resulting vector is limited to just this single line passing through the origin.