The optimization of the operational parameters and the experimental study with helium-hydrogen mixture on the miniature co-axial pulse tube refrigerator are carried out.

进行了微型同轴脉管制冷机系统运行参数的优化及氢氦混合工质应用的试验研究。

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The first bubbles to escape from the liquid are a mixture of air and hydrogen.

从该液体中最先逸出的气泡是空气和氢的混合物。

《新英汉大辞典》

And some go for pure chemistry, breaking the cellulose down into a gaseous mixture of hydrogen and carbon monoxide before building it back up into something more useful.

也有的是纯粹的化学，将纤维素分解成一种氢和碳的气体混合物，然后再将其合成更为有用的东西。

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Siddique Khan and Tanweer test-detonated a 300-gram hydrogen peroxide mixture in the tribal areas.

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The process, which converts a mixture of hydrogen and carbon monoxide to liquid fuels, and was discovered by German scientists.

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That hydrogen and carbon monoxide mixture is then pumped into one of two NOx traps, where it strips the oxygen from the NOx, forming nitrogen, carbon dioxide and water.

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