纤维素是带有好多羟基的不幼链环型布局的聚合物.Cellulose is a very polyhydroxylated of long - chain - type structure of the polymer.使用的催化剂对醇 羟基 的氧化具有高度的选择性并有很高的转化率.These reactions catalyzing oxidation of alcohol - OH groups have high yield and ...
正中线搏动性肿块提示腹主动脉瘤破裂.A pulsatile midline mass suggests ruptured abdominal aortic aneurysm.偏头痛是一类发作性且常为单侧的搏动性头痛,是神经科常见病之一.Migraine a kind of common and frequent illness in nervous system....
'Dogger ,'said Mr Dance ,'you have a good horse; take up this lad behind you.'“ 道格,”丹斯先生说, “ 你的马好, 让这孩子坐在你的后面. ”The Dogger Bank in the North Sea can be dangerous for ships.北海的多格尔沙洲对船舶有危险....
Oil and water will not intermingle.油和水不相融。Tumor cells at the margin may intermingle with cells of the surrounding gastric wall.边缘的肿瘤细胞与周围的胃壁细胞互相混合.Salt and sugar intermingle with each other.糖和盐相互混合在一起....