Pls assist to f/u,F/U 什么的缩写来的?

Pls assist to f/u,F/U 什么的缩写来的? pls kindly assist,tks!那还是不太通, U>2f f this information is used to comply with new IFRS disclosure requirements which assist F/S users to better understand the actual and potential effects of ... 魔方公式(U' F' U F )(U R U' R'), u大于f u是什么 U ask for chance,i give it to u one more time,so pls cherish it. u f 是什么? “f u c u m or f F U C K i f u c U／f模式是什么意思? f u c k F U C K f u c k F U C K ASSIST