短语词组短語absolute liver dullness area 肝絕對濁音區variation of dullness area 濁音區的變化relative hepatic dullness area 肝相對濁音區absolute dullness area 絕對濁音區hepatic dullness area 肝濁音區spleen dullness area 脾濁音區 返回 dullness area