This study illustrates the development of asymmetric flow field-flow fractionation (AF4) methods for the investigation of VLP.

这项研究阐述了将非对称流分离（AF4）方法开发用于VLP研究。

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Three-dimensional flow field in the elutriator of polythene packed system is simulated.

模拟了聚乙烯填充体系淘析器内的三维流场。

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And we used a vector field that represents the flow of whatever the substance is whose diffusion we are studying.

我们用向量场表示物质的扩散，而其扩散就是我们要研究的内容。

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Being so far north, much of region - some 146, 000 square km - is covered by glaciers and ice caps (a type of ice field where glaciers flow off in many directions).

BBC: Canadian glaciers face 'big losses'

If enacted, the Grassley bill will encourage companies to place more engineers and other skilled foreign nationals abroad, where more investment dollars will flow, which will not be good for U.S.-born professionals in the technology field.

FORBES: Requiring Foreigners to Be Paid More Than Americans