同时也是，矢量相减的原理。

And that brings us to the point of subtraction of vectors.

youdao

subtract：两个数相减并返回结果。

Subtract : Subtracts two Numbers and returns the result.

youdao

这是一个有符号整型，是两个指针相减后的结果。

A signed integer type that results from subtracting two Pointers.

youdao

You've got to juggle the two equations, multiply that by 4, multiply that by 3, add and subtract and so on.

同时处理这两个方程,这个两边乘以4,另一个两边乘以3,将两方程相加或相减求出答案

耶鲁公开课 - 基础物理课程节选

sb So in this case we would have 1 s a and 1 s b, and instead we would subtract one from the other, and what we would see is that instead of having additional, more wave function in the middle here, we've actually cancelled out the wave function and we end up with a node.

在这种情况下我们有1sa和，两者相减，我们可以看到不是在，中间有了额外更多的波函数，而是我们消掉了,波函数得到一个节点。

麻省理工公开课 - 化学原理课程节选