The sample, after being purged by reversed extraction and purified byPVP - kieselguhr column, was enriched through Amberlite XAD - 7 column.样品经过乙酸乙酯反萃取及PVP - 硅藻土层析柱后, 再径XAD - 7柱浓缩....
There’s something cowardly and ignoble about such an attitude.这种态度有点怯懦可鄙。They felt he had been cowardly in manipulating the system to avoid the draft.他们觉得他太没种，居然钻漏洞逃避服役。...a cowardly act of violence.懦弱的暴力行为That was sport...
I quenched my thirst with a glass of cold beer.我喝了一杯冰啤酒解渴.The fluorescence of AaH - 1 is quenched by I ~ -, acrylamide and N - bromosuccini - mide ( NBS ).表明能改变AaH -1 的 pH 环境 、 构象或使之变性的因素都能使它的萤光强度和 出血 活性同时发生相应的改变.The uti...
牛群在湿地上吃草。Cows were grazing on the marshes.她赶着牛群穿过荒野.She drove the herd of cattle through the wilderness.他精心照料着牛群,不使它们瘦下来.He took care to keep the cattle from falling off....
These upright stones are the vestiges of some ancient religion.这些竖立的石头是某种古代宗教的遗迹.These fragments of wall in London are vestiges of the Roman occupation.这些伦敦的断垣残壁是罗马人占领的遗迹.Xiangzi's living depended to a large extent ...
他们往往会买便宜的加工食品，像鸡肉罐头和通心粉之类的。They tend to buy cheap processed foods like canned chicken and macaroni.像《东京时报》之类的一些有名望的日报已经停刊了。Venerable dailies such as the Tokyo Times have shut down.她干过将水果装瓶或做果酱之类的活计吗？Did she do things lik...
结论可吸收性珊瑚羟基磷灰石具有促进骨髓基质细胞表达成骨细胞表型、合成细胞外基质的功能,是良好的细胞载体.Conclusion The absorbable coral hydroxyapatite is a good bone tissue engineering scaffold.结果:tgfβ在宫颈鳞癌细胞浆及细胞外基质中均可见表达.Results TGF � � 1 expression was found in both cyt...