照像材料含有亲水胶体的感蓝卤化银卤剂层.The photographic elements contain a blue - sensitive hydrophilic colloid silver halide emulsion layer.分子兼有亲水的和疏水的两个基团,叫做两性的或两亲的.Molecules with both hydrophilic and hydrophobic groups are called amphip...
如果瘿瘤是新近形成的,则效果最好.Best results will be obtained on recently formed galls.冠瘿是无组织的正在不断增殖的植物细胞所组成的癌状物.Crown galls are cancerous growths composed of disorganized and proliferating plant cells.瘿蜂所分泌的毒汁能使野玫瑰或像树产生畸形生长.The poison...
在这10年之间, 铁路运货车厢有了冷藏和加温设备, 以保存容易变坏的产品.But during that decade, railroad cars were refrigerated and heated , helping preserve perishable goods.防止啤酒变坏的主要方法是用纯酵母菌株发酵.The principal methods of avoiding spoilage are the use of p...
尼科尔斯动身去他在康涅狄格州的偏僻农舍了。Nichols set off for his remote farmhouse in Connecticut.我动身去山谷了，一切全凭运气。I set off for the valley, trusting to luck.他看一眼手表说：“我想我们最好动身吧。”He glanced at his wristwatch. "I suppose we'd better make a ...