七减去三等于四。

Seven minus three is four (7 – 3 = 4).

《牛津词典》

十二减去七剩五。

Twelve minus seven leaves five.

youdao

十减去六等于四。

Ten minus six is four.

youdao

So this delta energy here is very simply the energy of the initial state minus the energy of the final state.

很简单的，这个能量差等于,初始能量减去末能量。

麻省理工公开课 - 化学原理课程节选

And in terms of radial nodes, we have 2 minus 1 minus 0, so what we have is one radial node.

对于径向节点，我们有２减去１减去０,所以有一个径向节点。

麻省理工公开课 - 化学原理课程节选

That's the important message, delta H of formation of the products, minus delta H of formation of the reactants.

去反应物的生成焓，这,是个重要的信息，生成物的生成焓,减去反应物的生成焓。

麻省理工公开课 - 热力学与动力学课程节选