Gas phase chromatography, mass spectrum and infrared spectrum are used to characterize the novel silanes structures.

应用气相色谱质谱和红外光谱表征了它们的分子结构。

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Such current disturbs the zero out-put basic line of the light mass number region, so that it's very difficult to measure and record the height of spectrum peaks of the light mass number region.

这种电子流对轻质量部分质谱的零输出基线起干扰作用，致使这部分谱峰的峰高不能很好地测量和记录。

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We also present theexpressions for the excitation spectrum, lifetime, and effective mass of quasi-particles.

又根据量子多体理论，计算了准粒子的激发谱、寿命和有效质量。

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Mr. Elop, in an interview with The Wall Street Journal Europe, said there was room at both ends of the spectrum for additional devices, suggesting that they may introduce an even cheaper, and so even more mass-market, Windows Phone.

WSJ: Nokia's Bet On Microsoft May Still Payoff