另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.蕨类植物和针叶树的木质部仅含有管胞.The xylem of ferns and conifers contains only tracheids.胞质流还仅仅是一种解释真菌中转移的假说.Streaming is still...
Remove of iron from sulfuric acid leaching solution of ferrochromium alloy by goethite is researched.研究了用针铁矿法从铬铁合金硫酸浸出溶液中除铁并回收铬.Some martensite like bainites such as crossed type and midrib type in the alloy were investi...
The snake injects the venom immediately after biting its prey.毒蛇咬住猎物之后马上注入毒液.The doctor injects glucose into the patient's vein.医生把葡萄糖注射入病人的静脉.Water injects natural life and poesy into a noisy city.水给喧闹的城市注入自然的生机与诗意...
From these ports the grain is freighted down to Addis Ababa.粮食从这些港口运到亚的斯亚贝巴。He discloses, ababa and oneself individual character is very bashful that time.他透露, 当时奥巴马与自己的个性都非常害羞.That's endopening of Ethiopia's o...