什么是页头书名?英文叫running title.

正如中文译名,指：印在书中每一页（或每隔一页）上部的书名（或其缩写）.
英文定义如下：
running title - the title (or a shortened title) of a book used as a running head.
running head,running headline - a heading printed at the top of every page (or every other page) of a book.