Mass spectrometers for trace gas leak detection and methods for operating mass spectrometers are provided.

提供了用于示踪气体检漏的质谱仪以及用于操作质谱仪的方法。

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For example, it took over three years just to ship our first Android handset, and then another three years on top of that before the operating system truly reached critical mass.

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Two legislative measures under consideration in Congress could put additional pressure on foreign companies operating in countries involved with terrorism and weapons of mass destruction.

CENTERFORSECURITYPOLICY: Center For Security Policy

It was the first mass-market idiot-proof touch-to-get operating system that provided a computer experience to people without the experience or the inclination to use one.

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