Objective To study the action spectrum of ultraviolet light in chronic actinic dermatitis (CAD).

目的测定慢性光线性皮炎(CAD)紫外线作用光谱。

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The action spectrum of photosynthesis of tomato was studied with excitation and fluorescence spectra of its leaf.

通过番茄叶片的荧光光谱和激发光谱测量，能够得到番茄的光合作用之作用光谱。

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Different photodissociation spectra, the action spectrum as function of laser wavelength, and ratio curve of different channels were obtained.

得到了反应的光解谱和作为波长函数的光解行为光谱以及各反应通道的分支比。

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While government action to free more spectrum is expected, this transaction ensures that the spectrum which is already available for mobile services is used effectively to serve customers.

ENGADGET: Verizon scores new spectrum from Comcast, Time Warner and Bright House for $3.6 billion (update)

CUT, the most powerful union federation, said the action was motivated by a broad spectrum of issues, from rural violence and human rights to privatisation and the recession.

ECONOMIST: Colombia

Without action, he says, demand for spectrum will soon outlast supply.

FORBES: CES: FCC Chair Julius Genachowski, Live From Las Vegas