Polyacrylonitrile is insoluble in acrylonitrile.聚丙烯腈不溶于丙烯腈.Water, acrylonitrile and the galactomannan gum are added to a reactor with an alkali metal hydroxide.水 、 丙烯晴和半乳甘露聚糖胶,同碱金属氢氧化物在一起,加入到反应器中.Objective: To observe th...
I told her about him climbing up the drainpipe.我对她讲了他从排水管爬上去的事儿.Thieves shinned up a drainpipe and forced open the window.窃贼沿一根水管爬上去撬开窗户.He shinned down the drainpipe.他顺着排水管爬下来....
He gave a snort of derision.他哼了一下鼻子表示嘲笑.Children dread the derision of their playmates.孩子们害怕受到同伴的嘲笑.He tried to calm them, but was greeted with shouts of derision.他试图让他们平静下来，但却招致他们大声的嘲笑。Americans speak with derision of t...
Two knife racks hold her favourite knives.两个刀架上存放着她最心爱的刀具。You have to fight to reach the racks of clothes but the bargains are amazing.你得费力往前挤才能够到那一架架的衣服，但那些打折品的确超值。There are racks of musty clothing and piles of junk.有几架...
Immunohistochemical stains were positive for Vimentin, Keratin and EMA to a certain degree.免疫组织化学对波形蛋白(Vimentin) 、 角蛋白(Keratin)和上皮腺抗原(EMA)呈不同程度阳性反应.This treatment removes the most stubborn stains.这个方法能清除大多数顽固污渍。Callose s...