在公式节点内运算符和函数都是可用的。

These operators and functions are available inside the Formula Node.

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公式节点中的运算符和语法同样适用与表达式节点。

The same operators and syntax of the Formula Node apply to the Expression Node.

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图6.70。一个公式节点，和一些语法元素的注解。

Figure 6.70. A formula Node formula with some of its syntax elements annotated.

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And we can calculate that with the formula that we used, which was just n minus l minus 1 equals the number of nodes.

这个我们可以用我们以前用过的那个公式来计算，也就是节点数等于ｎ减去ｌ减去１

麻省理工公开课 - 化学原理课程节选