It is an integral part of the electron transport chain that catalyses primary charge separation.

这是一对电子传递链的电荷分离催化的主要组成部分。

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The SIMS technique bombards the lunar samples with a primary ion beam that allows the researchers to separate the ions with a magnet, depending on the charge.

SIMS技术可以以离子束轰击月岩样本，从而使研究人员调整电荷水平，用磁石分离出离子。

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Whether the blame for Sanchez's struggles lies more with him or the people around him, this much is certain: Idzik's primary charge is to improve the Jets' quarterback play and replenish their talent, and both Woody and Gil Brandt, the Dallas Cowboys' director of player personnel from 1960 through 1989, had the same recommendation for how he ought to do it: draft more quarterbacks.

WSJ: There Is Hope for the Jets After All

The primary question is what to charge for membership to Ray Drecker (Thomas Jane).

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Another government review is aimed at primary care: forcing GPs to charge non-eligible patients, something which is at present discretionary.

BBC: Getting tough with 'health tourists'