And study the influence of welding speed and active gas for welding porosity defect.

着重研究了焊接速度与活性气体对气孔形成的影响关系。

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With the help of rapid scanning Fourier transform infrared FT-IR spectroscopy, 11 IR-active gas products were resolved during the flash pyrolysis process.

用快速扫描傅立叶变换红外光谱，解析了分解过程中逸出的11种红外活性气体，给出了主要气相产物浓度随时间的变化曲线。

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This calibration method is of significance to the further analysis of atmospheric transmission and the retrieval of the concentration of infrared active gas in atmosphere.

这对于进一步分析大气透过率和反演大气中红外活性气体浓度具有实际意义。

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The count is 36 percent below a year ago level and 74 percent below the all-time September 12, 2008 high of 1, 606 active gas rigs in service.

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My family owns property in Wise County Texas that has two active natural gas wells on our property.

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ExxonMobil, long active operating gas stations in Colombia, decided last month to resume exploration there after a ten-year hiatus, in partnership with the Brazilian and Colombian state-owned oil companies.

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