In this article, we derive complex expansion formula of spherical and cylindrical waves by comparing the stacking field of complex ray and the close-form solution in the plane spectral domain.

通过在平面波谱域中比较复射线束叠加场和标准解的方法，导出了球面波和柱面波的复射线束展开系数公式。

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Reducing the pace of progress on course content, and emphasis on the expansion on basic formula and the application guide are also the features of new plan.

减小课程内容的进展梯度、重视基本公式的扩展及其对应用指导也是新方案的特点。

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The corresponding mathematic model has been established in accordance with the physical definition of the density and the expansion coefficient through formula derivation.

根据密度和膨胀系数的物理定义，通过公式推导，建立了相应的数学模型。

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Meanwhile, Bernie Ecclestone, who masterminded Formula One's global expansion, has labelled the idea to take the Premier League abroad as "crazy".

BBC: Overseas games plan 'in tatters'

But Blizzard is sticking with the tried and true formula, and has now released the first Starcraft 2 expansion worldwide: Heart of the Swarm.

FORBES: Starcraft 2: Heart of the Swarm Review - Part 1