suddenly the ladder broke, precipitating them down into a heap.
子突然断裂,让他们摔作一团。
suddenly the ladder broke, precipitating them down into a heap.
子突然断裂,让他们摔作一团。
Methods:We separated the subfractions of LDL by precipitating method and density gradient ultracentrifugation, and identified the subfraction by electronphoresis and electron microscope.
方法:通过沉淀法离LDL,然后经过超速离法离其亚组。
Palladium can be separated from polyxene by the process of resolving polyxene,removing nitrate,precipitating palladium,etc.The grade of pure platinum obtained from the process is more than 99.95%.
粗铂经王水溶解,赶硝,加入丁二酮肟使大部钯以沉淀的形式与铂离,余留的少量钯用溴酸钠水解法处理,可达到铂钯离的目的,所得纯铂品位高于99.95%。
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