The carbon nanospheres can be manufactured from a carbon precursor using templating catalytic nanoparticles.

可以使用模板催化纳米颗粒由碳前体制备碳纳米球。

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A carbon precursor like methane can be vaporized using heat where the melted precursor reacts with a catalytically active substrate to form graphene on the surface.

类似于甲烷的碳前体可吸热蒸发，熔化的前体和具有催化活性的基底相反应并在表面形成石墨烯。

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It was indicated that the modified coal pitch, which had not only a great deal of mesophase microbead but good thermostability as well, can be qualified to be an excellent carbon precursor.

研究结果表明：改性后的煤沥青不仅出现大量的中间相小球，而且耐热性优良，可作为炭材料优质的基体前驱体。

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One key element in searching for life on Mars is the presence of methane in the Martian atmosphere As a simple carbon compound, methane is often a precursor to the formation of the complex organic chemicals that make life possible.

FORBES: Curiosity Sniffs The Martian Atmosphere But Finds No Sign Of Life