"词形变化表" can be translated into English as "table of word forms" or "inflectional paradigm" (a more technical term in linguistics).
"Table of word forms" is a straightforward and commonly used phrase that clearly conveys the idea of a list or chart showing different forms of a word.
"Inflectional paradigm" is a more specific linguistic term referring to the set of all the inflected forms of a word, which might be more appropriate in academic or linguistic contexts.
In most general or educational contexts, "table of word forms" would be a suitable and easily understood translation.