Use of the fourth generation multigrade oil for diesel engine can cut down the warming up hours, save energy, reduce engine wear, and so on.

多级四代机油具有良好的低温起动性能以及节能性能，使用该油品可以缩短打温时间、节约能源、减少柴油机磨损等。

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Regarding economy, source of energy and environment as a whole, natural gas will become the fourth generation source of energy instead of crude oil in the twenty first century.

从经济、能源、环境整体来看，廿一世纪天然气将替代石油成为人类第四代能源。

youdao

Regarding economy, source of energy and environment as a whole, natural gas will become the fourth generation source of energy instead of crude oil in the twenty first century.

从经济、能源、环境整体来看，廿一世纪天然气将替代石油成为人类第四代能源。

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