x2 x2adpbasex2 base7 f2f2 adpbase5尔-f2adp-10北beijer-

base7f2x2adpbase5 北adp-beijer-adp 尔 10 -x2 basef2 f2x2

f2尔北f2x2x2 x2 beijeradpadp--10adpbase5 -f2basebase7