在该句子里that of是什么意义?句子是什么样的语法结构?

题目

在该句子里that of是什么意义?句子是什么样的语法结构?
读时看到下面一段话
In stature he was above the average height; his eyes were gray,his features regular and strong; his carriage that of perfect,robust health influenced by his years of army training.
其中最后一句话看得不是很懂,尤其不明白语法结构,that

答案

和前一句一样 省略了谓语动词.
应该是his carriage was that of perfect...
of后面接的是用来修饰that的,
然后health后面的influenced.都是修饰health的