Objective:To study the biomechancial properties of human umbilical cord vein with aging changes and to pro-vide theoretic evidence for clinic in collecting suitable blood graft.是什么意思_Objective:To study the biomechancial properties of human umbilical cord vein with aging changes and to pro-vide theoretic evidence for clinic in collecting suitable blood graft.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句