原牛，学名Bos primigenius，是一种体型庞大、力大无比的牛只，杂食性，目前已绝种。其学名起源于德语，意谓原始牛只。
misc. Bos primigenius
这是一片充满了各种羚羊的土地——还有原牛，一种已经灭绝的牛。
This was a landscape where antelope of all kinds abounded—along with Bos primigenius, a kind of oxen that has become extinct.
方法将致密丝素膜、多孔丝素膜和对照组的牛心包、蚀原海绵行复钙、溶血和血小板粘附试验。
Methods Recalcification, hemolysis and platelet adhesive test were conducted for the compact silk membrane, porous silk membrane, bovine pericardium and collagen sponge.
方法将致密丝素膜、多孔丝素膜和对照组的牛心包、蚀原海绵行复钙试验、溶血试验、血小板粘附试验。
Methods Recalcification test, hemolysis test and platelet adhesive test were conducted for compact silk membrane, polyporous silk membrane, bovine pericardium and collagen sponge.
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