natural resource calculation 自然资源核算
natural frequency calculation 自振频率计算
calculation of natural frequency 自振频率计算
calculation of natural resources 资源估算
calculation of the natural frequency 自振频率计算
natural calculation
自然计算
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Natural gas emits half as much carbon dioxide as coal when used to make electricity, though the calculation fails to take into account the release of methane from natural-gas wells and pipelines, which also contributes to climate change.
WSJ: Rise in U.S. Gas Production Fuels Unexpected Plunge in Emissions
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