OPPS门诊预付制
OPPabbr.对面的;相反的(=opposite)
Oppenheim's sign
opposing traffic[法] 对向交通, 双向通行
Oppolzer rs sign奥波尔泽氏征
opposing voltage反向电压
opposing faction[法] 反对派
opposing opinion反对意见
Oppel's illusion
oppositon benches[法] 反对党席位
opposing evidence反面证据
opposing monopoly反垄断