a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins
subject to the action of an ultracentrifuge
例句与用法
1.
One of the branches of nymu instrumentation center is located in the same building ; ultracentrifuges , scintillation counters , and a phosphoimager are free to use ，可供一般生化分子及细胞生物实验所需。此外，大楼内有阳明大学仪器中心的
2.
The virus was purified by ultracentrifuge . according to the ns gene sequence published by genbank , one primer t - 1 was designed to amplify the cdna by reverse transcript . the other primers nsl - u / ns1 - 1 and ns2 - u / ns2 - 1 . hns2 - u were designed to amplify the ns1 , ns2 and hns2 gene 本实验用接种鸡胚的病毒增殖方法获得了a / chicken / mudanjiang / 0823 / 00 ( h9n2 )分离株的大量增殖，增殖病毒经差速离心进行纯化，经超迷离心浓缩。
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