Biochar is a type of charcoal produced by heating crop wastes, wood or other biomass in a simple kiln designed to limit the presence of oxygen.

生物炭是农作物废料、木材或其它生物质在简易窑(为限制氧存量而设计的窑)内经过加热而制成的一种炭。

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It prevents the oxidation of the metal surfaces during the heating operation by excluding oxygen.

将氧排斥在外以防止在加热期间金属表面被氧化。

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Heating husks to 800 degrees centigrade (1,472 degrees Fahrenheit) in an oxygen-free furnace drives off carbon, leaving fine particles of nearly pure silica behind.

在无氧炉中将糠皮加热到800摄氏度(1472华氏度)将分离糠皮中的碳，留下几乎只含有硅的细小微粒。

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Grey speculated that a manufacturing defect could have triggered a physical short-circuit, which caused heating, released oxygen and led to a fire.

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