Fuel (in vapor form), air (oxygen), and an ignition temperature are necessary for combustion. No combustion can occur without all three of these essentials.

燃料(以蒸汽形式存在)、空气(氧气)和点燃温度是燃烧的必要条件，不具备这三个必要条件不可能燃烧。

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The product generate hydrogen and oxygen by electrolyzing water, hydrogen as fuel, oxygen as auxiliary combustion, the combustion products are just water vapor, and not pollute the workpieces.

通过电从水中提取氢气和氧气，氢气做为燃料，氧气助燃，燃烧的产物仅为水蒸气，不对加工的工件产生污染。

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In a fuel cell, chemical energy from hydrogen and oxygen (or air) is directly converted to electrical energy, i. e. without a combustion process.

在燃料电池，氢气和氧气的化学(或空气)直接转换为电能的，即没有一个燃烧的过程。

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The EPA pulled off the feat by sharply increasing the amount of oxygen-poor exhaust that is recirculated into the combustion chamber and increasing the pressure of the fuel being forced into the cylinder.

FORBES: EPA, Inc.