介绍八水氢氧化钡制取高纯碳酸钡的工艺, 产品质量及用户使用结果.Introducing the producing process of High Purity Barium CarbonateBarium Hydroxide, product quality and using results.以八水氢氧化钡和尿素为原料, 采用均相沉淀法制备了碳酸钡粉体.Using barium hydroxide octahydrate and u...
As such tensions increase, they loom larger in Russia's domestic politics.这种紧张关系的不断加剧使其在俄罗斯国内政治中愈发凸显。...Russia's budding democracy.俄罗斯新生的民主制度The middle decades of the 19th century marked a watershed in Russia...
Robert lost his footing and slithered down the bank.罗伯特失足滑下了河岸。The snake slithered away as we approached.我们一走近,蛇就爬走了。A small green snake slithered across the wet road.一条小绿蛇爬过潮湿的道路....