不同检测原理的检测器，决定了各种便携式气相色谱仪的性能。

Different analytical performances of portable gas chromatographers lie on the different working principles of the detectors.

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介绍了北京市东西电子技术研究所（北京东西分析仪器有限公司）、开发生产的的GC-4400型便携式光离子化气相色谱仪。

Model GC-4400 Photo ionization Gas Chromatograph development by Beijing City East and west Electronic Technology Institute is described in this article.

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介绍了北京市东西电子技术研究所（北京东西分析仪器有限公司）、开发生产的的GC-4400型便携式光离子化气相色谱仪。

Model GC-4400 Photo ionization Gas Chromatograph development by Beijing City East and west Electronic Technology Institute is described in this article.

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