"cover across" is not correct or commonly used in written English.
The phrase "across the cover" or "cover something across" can be used in some contexts, but it would depend on the specific sentence and intended meaning. Here is an example of how it could be used: I pulled the blanket tightly across the cover of the bed, making sure it was evenly spread over the entire surface.
So the snow cover across Siberia in the fall has steadily increased.
South Africa, for example, employs the local network to look at vegetation cover across the country.
in., and the pipe blew up, sending the manhole cover across 7th Av., breaking windows in the corner apt.
Videos smuggled out of Homs, their authenticity undetermined, showed gunfire and crowds of people running for cover across a grassy lot.
Walcott ran on to John Djourou's defensive header from an on-side position, but Bendtner, who had been offside, appeared to block Williamson as he attempted to cover across.
Future maps Mapping climate-related changes in land cover across the globe is becoming a major research concern, and the International Institute for Applied Systems Analysis (IIASA), just south of Vienna, works with several organisations to do this work.
The reports came a day after Secretary of Defense Donald H. Rumsfeld said the United States military would not allow fighters from Al Qaeda and the Taliban to take cover across Afghanistan's borders.
I looked for a copy for decades and won't soon forget the excitement I felt when I saw its familiar blue cover across the room in a bookcase of children's literature in G. Heywood Hill's legendary rare-book store in London just a few years ago.
Though posts like those published on The Lede will no longer be presented as a blog, our reporters and editors will continue to combine original reporting with social media content and curated video in the stories that they cover across our site.
However, experienced cover across the back four is important too.
We averaged each taxon's cover across the 48 quadrats and tallied the number of quadrats on which each taxon occurred.
