When the external RF frequency is much bigger than ion plasma frequency, ions answer average field.

当外加射频频率远大于离子等离子体频率，离子响应平均场，离子的密度分布几乎不随时间变化；

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The figures of average field-synergy angles in the shell side are obtained using user-defined programs.

编制自定义程序提取了壳侧平均场协同角的直观图。

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Interactions not contained in the original Hamiltonian are generated by this unitary transformation. With an average field approximation, we can close the flow equations.

由于在幺正变换下产生了新的高阶相互作用项，利用平均场近似手段得到了系统参数随流参数变化的流方程。

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In 2012, Toronto had an average home field attendance of 25, 921.

FORBES: Toronto Blue Jays Tickets To Be Amongst The Most Expensive In 2013

Interestingly, even though the Boston Red Sox retain their position as the most expensive average home field ticket, the price is down 21.43% from last season at this time.

FORBES: Toronto Blue Jays Tickets To Be Amongst The Most Expensive In 2013

Since every foreign student who graduates from a U.S. university with an advanced degree and stays here in a STEM field creates on average 2.62 American jobs, this initiative helps us all.

WHITEHOUSE: Making the Immigration System Work for Our Economy