Examples range from contamination of the food or water supply, to high levels of air or noise pollution, a chemical accident, a disease outbreak or a natural disaster.
这方面例子的范围包括从食物或水供应的污染，到空气或噪音高度污染、化学事故、疾病暴发或自然灾害。
The effect of the natural gas supply method, passage diameter and heated temperature of intake air on the ignition, combustion and emission are studied.
天然气供给方式，主副燃烧室通道直径和进气温度对压缩着火天然气发动机起动，燃烧和排放的影响也作了研究。
Acording to air supply mode, the device has forced air supply and natural air supply.
根据供风方式，该装置有强制送风和自然送风两种。
Carbon black: a fine, intensely black pigment obtained by burning natural gas or oil with restricted air supply.
碳黑：在缺乏空气的情况下，燃烧天然气或油产生的一种细面极黑的颜料。
Carbon black: a fine, intensely black pigment obtained by burning natural gas or oil with restricted air supply.
碳黑：在缺乏空气的情况下，燃烧天然气或油产生的一种细面极黑的颜料。
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