还有一种情况是：公式无法放在一整行中，如果在同一行就会超出界面，放在下一行就会使得上一行的内容稀疏...
Fine-tuning the size of the table reduces the badness to 1314. Conclusion: Just like nr 1, we leave this like it is. Final result With this, all known occurences of Underfull \vbox have been treated. Of the original 88 only 2 are left, with a relatively low badness of 1748 and 1314...