This paper introduced an automatic air mixing equipment for gas protection welding at work site, which can control the accurate proportion of airs.

介绍了一种用于焊接现场的气体保护焊的自动混气设备，该设备能精确控制气体混合比例。

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Computer was used to gather and display information about the proportions of air mixing, output pressure, humidity, etc. and give sound and light alarm notice when beyond limitation.

计算机适时采集、显示混合气体的混合比例、输出压力、气体湿度等信息，超限发出声光报警。

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The wide flammability range, 4% to 74% in air, and the small amount of energy required for ignition necessitate special handling to prevent the inadvertent mixing of hydrogen with air.

在空气中氢的易燃范围很宽，从4%到74%，而且点燃所需的能量很少，必须特别处理，以防止无意中把氢和空气混合在一起。

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Its spicy tang floods the air, mixing with the scent of roasted nuts being stirred by an elderly woman and the sweetly rotting smell of a spiky durian fruit being cut with a hatchet.

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It works by forcing fuel directly into the combustion chamber of each cylinder to mix air and gas simultaneously at the point of combustion, rather than mixing air and gas in a separate chamber like more conventional engines.

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That's why many balloon retailers are mixing air or other safe, alternate gases with helium to extend the supply through this shortage.

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