You could use an expensive, bulky gas chromatograph-but Harvard researchers have developed an instrument you can carry in your pocket.
你当然可以使用昂贵笨重的气相色谱分析法——但是哈佛的研究者现在开发出了一套你可以装进口袋里的仪器。
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This paper discusses the development and features of a data acquisition system of portable under-well diagnostic instrument based on a pocket computer PC-1500.