404. That’s an error.

The requested URL /translate_c?depth=1&hl=ru&prev=/search%3Fq%3Dfriction%2Bstir%2Bprocessing%2Bpdf%26newwindow%3D1%26biw%3D911%26bih%3D407&rurl=translate.google.ru&sl=en&u=http://en.wikipedia.org/wiki/Metal&usg=ALkJrhiH-u5rL3LtkSUnpss7HWsbLcZBXQ was not found on this server. That’s all we know.