单词	脐静脉封闭
释义	脐静脉封闭closure-vein
随便看	external transconductance external transistor characteristic quantity external transmit clock external transmit clock，extc external transport instruction external trigger external triggering external trigger pulse external trochanter external unit external unit identifier external upset external upset casing external upset forging external upsetting external urethral orifice external use external uterine orifice external uterine orifice (external orifice of uterus) external validation external validity external variable external variance external variation external vertebral column vein