These are genetic disorders that only affect males normally. They are things like muscular dystrophy and haemophilia.这些遗传病通常只发生在男性身上，如肌肉萎缩、血友病等。Diseases like multiple sclerosis, muscular dystrophy or polio can leave peop...
血管周围细胞的营养不足,引起外膜的变性.Inadequate cell nutrition around vessels causes degeneration of tunica adventitia.假性动脉瘤一词用于只有一层动脉外膜的动脉瘤.A false aneurysm is the term applied when only the adventitia is present.心脏的外表面是由另一层结缔组织, 即心外膜所覆...
Cytidine ( cytosine nucleoside ) A NUCLEOSIDE formed when cytosine is linked to Dribose via a � � - glycosidic bond.胞嘧 啶 核苷:当胞嘧啶通过β - 糖苷键与D- 核糖接合形成的核苷.The DNA base composition is 32.6 - 33.1 mol % guanine plus cytosine.D...
The lifeboat soon got abreast of the foundering ship.救生艇很快就赶到了那艘正在下沉的船旁.A police car drew abreast of us and signalled us to stop.一辆警车开过来与我们并排，示意我们停下来。As he drew abreast of the man he pretended to stumble.当他赶上那个男人时，他装出了要跌...
白垩纪尚无壳斗科可靠的大化石记录,微化石需要进一步研究才能确定亲缘关系以及古新世壳斗科已经分化出两个类群.No creditable macrofossil record of the Fagaceae exists in the Cretaceous equivocal and require further study....