At present, most of the flammable gas detectors are based on the catalytic combustion principle.

目前可燃气体探测器大多数采用的是催化燃烧原理。

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The operational principle of the combustion efficiency meter and the basic circuits for thermocouple temperature measurement, oxygen measurement, co measurement are introduced.

介绍燃烧效率测定仪的工作原理及热电偶测温、氧测量、一氧化碳测量的基本电路。

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Construction and working principle of a new design are introduced, combustion and heat transfer performance in the furnace approached.

本文介绍了一种新型的燃煤流化床热风炉的结构和工作原理，探讨了该炉的燃烧和传热特性。

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It involves taking oxygen to the fuel not as a gas, but bound to a metal such as iron or calcium, and should in principle make combustion more efficient.

BBC: Whatever happened to carbon capture?