O 开头单词
obstinacies n.顽固；(病痛等)难治
obstetrics and gynaecology 妇产科学。
obstetrics n.产科学；助产术
obstetrician-gynecologist 妇产科医师
obstetrician hand [医药科学]助产士手
obstetrician and gynecologist 妇产科医生 妇产科医师
obstetrician n.产科医生
obstetrically adj.产科的=obstetrical.
obstetrical sling [医药科学]产科吊绳
obstetrical sheet [材料科学]产科用床单纸
obstetrical halter [医药科学]产科绞索
obstetrical adj.产科的=obstetric.
obstetric vacuum cup [医药科学]产科吸杯
obstetric stethoscope [医药科学]产科听诊器
obstetric forceps delivery [医药科学]产钳术