Covers both the geometric concept (a non-vertical, non-horizontal line) and the typographic '/' symbol. For the backslash '\' specifically, Chinese uses
反斜线 (fǎn xiéxiàn) or
反斜杠 (fǎn xiégàng). The everyday computer-keyboard reading is often
斜杠 (xiégàng, 'oblique stick').
