Orthn.奥思ortn.剩菜；残屑orthiconoscopen.正摄象管(正析摄象管；低速电子束摄象管)orthic greyzem典型灰色森林土orthiopisthius[医] 窄枕颅orticant agent发痒剂ortyiocoryphus窄顶颅orthiuraniscus[医] 窄腭颅Orthiocoryphus窄顶颅Ortalis vetulan.小灰头稚冠雉(宝冠鸟科)orthic luvisol典型淋溶土ortyioprosopus窄面颅