It can be quenched in a controlled atmosphere, thin carburizing, carbonitriding heat treatment process.
它能在可控气氛下进行淬火，薄层渗碳、碳氮共渗等热处理工艺。
In order to lighten this effect, the concentration of CO_2 in atmosphere must be controlled.
为了遏制地球温室效应的加剧，必须控制大气中CO_2的浓度。
In order to lighten this effect, the concentration of CO_2 in atmosphere must be controlled.
为了遏制地球温室效应的加剧，必须控制大气中CO_2的浓度。
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