英语翻译You textbook includes this as type as a particular type

英语翻译
You textbook includes this as type as a particular type of glacier movement,but
you will see that these are … cause many textbooks that omitted as type of
movement as included.And I might not include right now,if there won’t in
your textbooks.
这句话如何翻译？而且as……as中间不是只能加形容词吗？为什么会出现as type as？